Search criteria
ⓘ
Use full-text search for keyword queries.
Combine vendor, product, and sources to narrow results.
Enable “Apply ordering” to sort by dates instead of relevance.
10 vulnerabilities found for Nebula 300+ by Nexxt Solutions
CVE-2026-31851 (GCVE-0-2026-31851)
Vulnerability from nvd – Published: 2026-03-23 12:21 – Updated: 2026-03-26 10:47
VLAI?
Title
Lack of Rate Limiting Enables Brute-Force Attacks in Nexxt Nebula 300+
Summary
Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout mechanisms on authentication interfaces. An attacker can perform unlimited authentication attempts against endpoints that rely on credential validation, enabling brute-force attacks to guess administrative credentials without restriction.
Severity ?
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Nexxt Solutions | Nebula 300+ |
Affected:
<= 12.01.01.37
|
Credits
Angel Barre (call4pwn)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-31851",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-23T15:16:32.320223Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-23T15:51:38.714Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Nebula 300+",
"vendor": "Nexxt Solutions",
"versions": [
{
"status": "affected",
"version": "\u003c= 12.01.01.37"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Angel Barre (call4pwn)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout mechanisms on authentication interfaces. An attacker can perform unlimited authentication attempts against endpoints that rely on credential validation, enabling brute-force attacks to guess administrative credentials without restriction."
}
],
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout mechanisms on authentication interfaces. An attacker can perform unlimited authentication attempts against endpoints that rely on credential validation, enabling brute-force attacks to guess administrative credentials without restriction."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "An attacker can perform unlimited authentication attempts, enabling brute-force attacks against administrative credentials."
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "HIGH",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-307",
"description": "CWE-307 Improper Restriction of Excessive Authentication Attempts",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T10:47:04.841Z",
"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"shortName": "TuranSec"
},
"references": [
{
"url": "https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/"
},
{
"url": "https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Lack of Rate Limiting Enables Brute-Force Attacks in Nexxt Nebula 300+",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"assignerShortName": "TuranSec",
"cveId": "CVE-2026-31851",
"datePublished": "2026-03-23T12:21:54.907Z",
"dateReserved": "2026-03-09T18:20:23.399Z",
"dateUpdated": "2026-03-26T10:47:04.841Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31850 (GCVE-0-2026-31850)
Vulnerability from nvd – Published: 2026-03-23 12:21 – Updated: 2026-03-26 10:46
VLAI?
Title
Plaintext Storage of Credentials in Configuration Backup in Nexxt Nebula 300+
Summary
Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, in plaintext within exported configuration backup files. These backup files can be obtained through legitimate functionality or other weaknesses and do not apply encryption or hashing, allowing attackers to directly extract sensitive information.
Severity ?
CWE
- CWE-256 - Plaintext Storage of a Password
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Nexxt Solutions | Nebula 300+ |
Affected:
<= 12.01.01.37
|
Credits
Angel Barre (call4pwn)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-31850",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-23T15:07:10.958896Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-23T15:51:46.991Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Nebula 300+",
"vendor": "Nexxt Solutions",
"versions": [
{
"status": "affected",
"version": "\u003c= 12.01.01.37"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Angel Barre (call4pwn)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, in plaintext within exported configuration backup files. These backup files can be obtained through legitimate functionality or other weaknesses and do not apply encryption or hashing, allowing attackers to directly extract sensitive information."
}
],
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, in plaintext within exported configuration backup files. These backup files can be obtained through legitimate functionality or other weaknesses and do not apply encryption or hashing, allowing attackers to directly extract sensitive information."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "An attacker who obtains a configuration backup file can extract administrative credentials and WiFi pre-shared keys in plaintext."
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "HIGH",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-256",
"description": "CWE-256 Plaintext Storage of a Password",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T10:46:21.810Z",
"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"shortName": "TuranSec"
},
"references": [
{
"url": "https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/"
},
{
"url": "https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Plaintext Storage of Credentials in Configuration Backup in Nexxt Nebula 300+",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"assignerShortName": "TuranSec",
"cveId": "CVE-2026-31850",
"datePublished": "2026-03-23T12:21:41.917Z",
"dateReserved": "2026-03-09T18:20:23.399Z",
"dateUpdated": "2026-03-26T10:46:21.810Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31849 (GCVE-0-2026-31849)
Vulnerability from nvd – Published: 2026-03-23 12:16 – Updated: 2026-03-26 10:45
VLAI?
Title
Missing CSRF Protection on Administrative Endpoints in Nexxt Nebula 300+
Summary
Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing endpoints such as /goform/setSysTools and other administrative interfaces. As a result, an attacker can craft malicious web requests that are executed in the context of an authenticated administrator’s browser, leading to unauthorized configuration changes, including enabling services or modifying system settings.
Severity ?
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Nexxt Solutions | Nebula 300+ |
Affected:
<= 12.01.01.37
|
Credits
Angel Barre (call4pwn)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-31849",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-23T15:17:48.215554Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-23T15:51:53.375Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Nebula 300+",
"vendor": "Nexxt Solutions",
"versions": [
{
"status": "affected",
"version": "\u003c= 12.01.01.37"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Angel Barre (call4pwn)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing endpoints such as \u003ccode\u003e/goform/setSysTools\u003c/code\u003e and other administrative interfaces. As a result, an attacker can craft malicious web requests that are executed in the context of an authenticated administrator\u2019s browser, leading to unauthorized configuration changes, including enabling services or modifying system settings."
}
],
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing endpoints such as /goform/setSysTools and other administrative interfaces. As a result, an attacker can craft malicious web requests that are executed in the context of an authenticated administrator\u2019s browser, leading to unauthorized configuration changes, including enabling services or modifying system settings."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "A remote attacker can cause an authenticated administrator\u0027s browser to send forged state-changing requests, resulting in unauthorized configuration changes."
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-352",
"description": "CWE-352 Cross-Site Request Forgery (CSRF)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T10:45:40.996Z",
"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"shortName": "TuranSec"
},
"references": [
{
"name": "Official product page",
"url": "https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/"
},
{
"name": "Firmware download",
"url": "https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Missing CSRF Protection on Administrative Endpoints in Nexxt Nebula 300+",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"assignerShortName": "TuranSec",
"cveId": "CVE-2026-31849",
"datePublished": "2026-03-23T12:16:59.624Z",
"dateReserved": "2026-03-09T18:20:23.399Z",
"dateUpdated": "2026-03-26T10:45:40.996Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31848 (GCVE-0-2026-31848)
Vulnerability from nvd – Published: 2026-03-23 12:09 – Updated: 2026-03-26 10:45
VLAI?
Title
Reversible ecos_pw Cookie Allows Authentication Bypass in Nexxt Nebula 300+
Summary
Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the ecos_pw cookie for authentication, which contains Base64-encoded credential data combined with a static suffix. Because the encoding is reversible and lacks integrity protection, an attacker can reconstruct or forge a valid cookie value without proper authentication. This allows unauthorized administrative access to protected endpoints.
Severity ?
CWE
- CWE-312 - Cleartext Storage of Sensitive Information
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Nexxt Solutions | Nebula 300+ |
Affected:
<= 12.01.01.37
|
Credits
Angel Barre (call4pwn)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-31848",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-23T15:16:34.823978Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-23T15:51:59.795Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "affected",
"product": "Nebula 300+",
"vendor": "Nexxt Solutions",
"versions": [
{
"status": "affected",
"version": "\u003c= 12.01.01.37"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Angel Barre (call4pwn)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the \u003ccode\u003eecos_pw\u003c/code\u003e cookie for authentication, which contains Base64-encoded credential data combined with a static suffix. Because the encoding is reversible and lacks integrity protection, an attacker can reconstruct or forge a valid cookie value without proper authentication. This allows unauthorized administrative access to protected endpoints."
}
],
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the ecos_pw cookie for authentication, which contains Base64-encoded credential data combined with a static suffix. Because the encoding is reversible and lacks integrity protection, an attacker can reconstruct or forge a valid cookie value without proper authentication. This allows unauthorized administrative access to protected endpoints."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "An attacker who obtains or reconstructs the ecos_pw cookie value can authenticate as an administrator and gain unauthorized access to the device."
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-312",
"description": "CWE-312 Cleartext Storage of Sensitive Information",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T10:45:19.121Z",
"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"shortName": "TuranSec"
},
"references": [
{
"name": "Official product page",
"url": "https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/"
},
{
"name": "Firmware download",
"url": "https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Reversible ecos_pw Cookie Allows Authentication Bypass in Nexxt Nebula 300+",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"assignerShortName": "TuranSec",
"cveId": "CVE-2026-31848",
"datePublished": "2026-03-23T12:09:30.338Z",
"dateReserved": "2026-03-09T18:20:23.399Z",
"dateUpdated": "2026-03-26T10:45:19.121Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31847 (GCVE-0-2026-31847)
Vulnerability from nvd – Published: 2026-03-23 12:07 – Updated: 2026-03-26 10:52
VLAI?
Title
Hidden Functionality Enables Remote Telnet Activation via /goform/setSysTools in Nexxt Nebula 300+
Summary
Hidden functionality in the /goform/setSysTools endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows remote enablement of a Telnet service. By sending a crafted POST request with parameters such as telnetManageEn=true and telnetPwd, an authenticated attacker can activate a Telnet service on port 23. This exposes a privileged diagnostic interface that is not intended for external access and can be used to interact with the underlying system.
Severity ?
CWE
- CWE-912 - Hidden Functionality
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Nexxt Solutions | Nebula 300+ |
Affected:
<= 12.01.01.37 , ≤ Nebula300+_v12.01.01.37
(custom)
|
Credits
Angel Barre (call4pwn)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-31847",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-23T15:16:37.215985Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-23T15:52:16.990Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Nebula 300+",
"vendor": "Nexxt Solutions",
"versions": [
{
"lessThanOrEqual": "Nebula300+_v12.01.01.37",
"status": "affected",
"version": "\u003c= 12.01.01.37",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Angel Barre (call4pwn)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Hidden functionality in the \u003ccode\u003e/goform/setSysTools\u003c/code\u003e endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows remote enablement of a Telnet service. By sending a crafted POST request with parameters such as \u003ccode\u003etelnetManageEn=true\u003c/code\u003e and \u003ccode\u003etelnetPwd\u003c/code\u003e, an authenticated attacker can activate a Telnet service on port 23. This exposes a privileged diagnostic interface that is not intended for external access and can be used to interact with the underlying system."
}
],
"value": "Hidden functionality in the /goform/setSysTools endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows remote enablement of a Telnet service. By sending a crafted POST request with parameters such as telnetManageEn=true and telnetPwd, an authenticated attacker can activate a Telnet service on port 23. This exposes a privileged diagnostic interface that is not intended for external access and can be used to interact with the underlying system."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "An attacker who can invoke the affected functionality can enable a privileged Telnet service remotely, exposing a diagnostic management interface and enabling further compromise of the device."
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 8.5,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "HIGH",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-912",
"description": "CWE-912 Hidden Functionality",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T10:52:50.115Z",
"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"shortName": "TuranSec"
},
"references": [
{
"name": "Official product page",
"url": "https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/"
},
{
"name": "Firmware download",
"url": "https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Hidden Functionality Enables Remote Telnet Activation via /goform/setSysTools in Nexxt Nebula 300+",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"assignerShortName": "TuranSec",
"cveId": "CVE-2026-31847",
"datePublished": "2026-03-23T12:07:05.062Z",
"dateReserved": "2026-03-09T18:20:23.399Z",
"dateUpdated": "2026-03-26T10:52:50.115Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31851 (GCVE-0-2026-31851)
Vulnerability from cvelistv5 – Published: 2026-03-23 12:21 – Updated: 2026-03-26 10:47
VLAI?
Title
Lack of Rate Limiting Enables Brute-Force Attacks in Nexxt Nebula 300+
Summary
Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout mechanisms on authentication interfaces. An attacker can perform unlimited authentication attempts against endpoints that rely on credential validation, enabling brute-force attacks to guess administrative credentials without restriction.
Severity ?
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Nexxt Solutions | Nebula 300+ |
Affected:
<= 12.01.01.37
|
Credits
Angel Barre (call4pwn)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-31851",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-23T15:16:32.320223Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-23T15:51:38.714Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Nebula 300+",
"vendor": "Nexxt Solutions",
"versions": [
{
"status": "affected",
"version": "\u003c= 12.01.01.37"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Angel Barre (call4pwn)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout mechanisms on authentication interfaces. An attacker can perform unlimited authentication attempts against endpoints that rely on credential validation, enabling brute-force attacks to guess administrative credentials without restriction."
}
],
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout mechanisms on authentication interfaces. An attacker can perform unlimited authentication attempts against endpoints that rely on credential validation, enabling brute-force attacks to guess administrative credentials without restriction."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "An attacker can perform unlimited authentication attempts, enabling brute-force attacks against administrative credentials."
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "HIGH",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-307",
"description": "CWE-307 Improper Restriction of Excessive Authentication Attempts",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T10:47:04.841Z",
"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"shortName": "TuranSec"
},
"references": [
{
"url": "https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/"
},
{
"url": "https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Lack of Rate Limiting Enables Brute-Force Attacks in Nexxt Nebula 300+",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"assignerShortName": "TuranSec",
"cveId": "CVE-2026-31851",
"datePublished": "2026-03-23T12:21:54.907Z",
"dateReserved": "2026-03-09T18:20:23.399Z",
"dateUpdated": "2026-03-26T10:47:04.841Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31850 (GCVE-0-2026-31850)
Vulnerability from cvelistv5 – Published: 2026-03-23 12:21 – Updated: 2026-03-26 10:46
VLAI?
Title
Plaintext Storage of Credentials in Configuration Backup in Nexxt Nebula 300+
Summary
Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, in plaintext within exported configuration backup files. These backup files can be obtained through legitimate functionality or other weaknesses and do not apply encryption or hashing, allowing attackers to directly extract sensitive information.
Severity ?
CWE
- CWE-256 - Plaintext Storage of a Password
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Nexxt Solutions | Nebula 300+ |
Affected:
<= 12.01.01.37
|
Credits
Angel Barre (call4pwn)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-31850",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-23T15:07:10.958896Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-23T15:51:46.991Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Nebula 300+",
"vendor": "Nexxt Solutions",
"versions": [
{
"status": "affected",
"version": "\u003c= 12.01.01.37"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Angel Barre (call4pwn)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, in plaintext within exported configuration backup files. These backup files can be obtained through legitimate functionality or other weaknesses and do not apply encryption or hashing, allowing attackers to directly extract sensitive information."
}
],
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, in plaintext within exported configuration backup files. These backup files can be obtained through legitimate functionality or other weaknesses and do not apply encryption or hashing, allowing attackers to directly extract sensitive information."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "An attacker who obtains a configuration backup file can extract administrative credentials and WiFi pre-shared keys in plaintext."
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "HIGH",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-256",
"description": "CWE-256 Plaintext Storage of a Password",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T10:46:21.810Z",
"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"shortName": "TuranSec"
},
"references": [
{
"url": "https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/"
},
{
"url": "https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Plaintext Storage of Credentials in Configuration Backup in Nexxt Nebula 300+",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"assignerShortName": "TuranSec",
"cveId": "CVE-2026-31850",
"datePublished": "2026-03-23T12:21:41.917Z",
"dateReserved": "2026-03-09T18:20:23.399Z",
"dateUpdated": "2026-03-26T10:46:21.810Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31849 (GCVE-0-2026-31849)
Vulnerability from cvelistv5 – Published: 2026-03-23 12:16 – Updated: 2026-03-26 10:45
VLAI?
Title
Missing CSRF Protection on Administrative Endpoints in Nexxt Nebula 300+
Summary
Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing endpoints such as /goform/setSysTools and other administrative interfaces. As a result, an attacker can craft malicious web requests that are executed in the context of an authenticated administrator’s browser, leading to unauthorized configuration changes, including enabling services or modifying system settings.
Severity ?
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Nexxt Solutions | Nebula 300+ |
Affected:
<= 12.01.01.37
|
Credits
Angel Barre (call4pwn)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-31849",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-23T15:17:48.215554Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-23T15:51:53.375Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Nebula 300+",
"vendor": "Nexxt Solutions",
"versions": [
{
"status": "affected",
"version": "\u003c= 12.01.01.37"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Angel Barre (call4pwn)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing endpoints such as \u003ccode\u003e/goform/setSysTools\u003c/code\u003e and other administrative interfaces. As a result, an attacker can craft malicious web requests that are executed in the context of an authenticated administrator\u2019s browser, leading to unauthorized configuration changes, including enabling services or modifying system settings."
}
],
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing endpoints such as /goform/setSysTools and other administrative interfaces. As a result, an attacker can craft malicious web requests that are executed in the context of an authenticated administrator\u2019s browser, leading to unauthorized configuration changes, including enabling services or modifying system settings."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "A remote attacker can cause an authenticated administrator\u0027s browser to send forged state-changing requests, resulting in unauthorized configuration changes."
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-352",
"description": "CWE-352 Cross-Site Request Forgery (CSRF)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T10:45:40.996Z",
"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"shortName": "TuranSec"
},
"references": [
{
"name": "Official product page",
"url": "https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/"
},
{
"name": "Firmware download",
"url": "https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Missing CSRF Protection on Administrative Endpoints in Nexxt Nebula 300+",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"assignerShortName": "TuranSec",
"cveId": "CVE-2026-31849",
"datePublished": "2026-03-23T12:16:59.624Z",
"dateReserved": "2026-03-09T18:20:23.399Z",
"dateUpdated": "2026-03-26T10:45:40.996Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31848 (GCVE-0-2026-31848)
Vulnerability from cvelistv5 – Published: 2026-03-23 12:09 – Updated: 2026-03-26 10:45
VLAI?
Title
Reversible ecos_pw Cookie Allows Authentication Bypass in Nexxt Nebula 300+
Summary
Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the ecos_pw cookie for authentication, which contains Base64-encoded credential data combined with a static suffix. Because the encoding is reversible and lacks integrity protection, an attacker can reconstruct or forge a valid cookie value without proper authentication. This allows unauthorized administrative access to protected endpoints.
Severity ?
CWE
- CWE-312 - Cleartext Storage of Sensitive Information
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Nexxt Solutions | Nebula 300+ |
Affected:
<= 12.01.01.37
|
Credits
Angel Barre (call4pwn)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-31848",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-23T15:16:34.823978Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-23T15:51:59.795Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "affected",
"product": "Nebula 300+",
"vendor": "Nexxt Solutions",
"versions": [
{
"status": "affected",
"version": "\u003c= 12.01.01.37"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Angel Barre (call4pwn)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the \u003ccode\u003eecos_pw\u003c/code\u003e cookie for authentication, which contains Base64-encoded credential data combined with a static suffix. Because the encoding is reversible and lacks integrity protection, an attacker can reconstruct or forge a valid cookie value without proper authentication. This allows unauthorized administrative access to protected endpoints."
}
],
"value": "Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the ecos_pw cookie for authentication, which contains Base64-encoded credential data combined with a static suffix. Because the encoding is reversible and lacks integrity protection, an attacker can reconstruct or forge a valid cookie value without proper authentication. This allows unauthorized administrative access to protected endpoints."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "An attacker who obtains or reconstructs the ecos_pw cookie value can authenticate as an administrator and gain unauthorized access to the device."
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-312",
"description": "CWE-312 Cleartext Storage of Sensitive Information",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T10:45:19.121Z",
"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"shortName": "TuranSec"
},
"references": [
{
"name": "Official product page",
"url": "https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/"
},
{
"name": "Firmware download",
"url": "https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Reversible ecos_pw Cookie Allows Authentication Bypass in Nexxt Nebula 300+",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"assignerShortName": "TuranSec",
"cveId": "CVE-2026-31848",
"datePublished": "2026-03-23T12:09:30.338Z",
"dateReserved": "2026-03-09T18:20:23.399Z",
"dateUpdated": "2026-03-26T10:45:19.121Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31847 (GCVE-0-2026-31847)
Vulnerability from cvelistv5 – Published: 2026-03-23 12:07 – Updated: 2026-03-26 10:52
VLAI?
Title
Hidden Functionality Enables Remote Telnet Activation via /goform/setSysTools in Nexxt Nebula 300+
Summary
Hidden functionality in the /goform/setSysTools endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows remote enablement of a Telnet service. By sending a crafted POST request with parameters such as telnetManageEn=true and telnetPwd, an authenticated attacker can activate a Telnet service on port 23. This exposes a privileged diagnostic interface that is not intended for external access and can be used to interact with the underlying system.
Severity ?
CWE
- CWE-912 - Hidden Functionality
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Nexxt Solutions | Nebula 300+ |
Affected:
<= 12.01.01.37 , ≤ Nebula300+_v12.01.01.37
(custom)
|
Credits
Angel Barre (call4pwn)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-31847",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-23T15:16:37.215985Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-23T15:52:16.990Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Nebula 300+",
"vendor": "Nexxt Solutions",
"versions": [
{
"lessThanOrEqual": "Nebula300+_v12.01.01.37",
"status": "affected",
"version": "\u003c= 12.01.01.37",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Angel Barre (call4pwn)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Hidden functionality in the \u003ccode\u003e/goform/setSysTools\u003c/code\u003e endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows remote enablement of a Telnet service. By sending a crafted POST request with parameters such as \u003ccode\u003etelnetManageEn=true\u003c/code\u003e and \u003ccode\u003etelnetPwd\u003c/code\u003e, an authenticated attacker can activate a Telnet service on port 23. This exposes a privileged diagnostic interface that is not intended for external access and can be used to interact with the underlying system."
}
],
"value": "Hidden functionality in the /goform/setSysTools endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows remote enablement of a Telnet service. By sending a crafted POST request with parameters such as telnetManageEn=true and telnetPwd, an authenticated attacker can activate a Telnet service on port 23. This exposes a privileged diagnostic interface that is not intended for external access and can be used to interact with the underlying system."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "An attacker who can invoke the affected functionality can enable a privileged Telnet service remotely, exposing a diagnostic management interface and enabling further compromise of the device."
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 8.5,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "HIGH",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-912",
"description": "CWE-912 Hidden Functionality",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T10:52:50.115Z",
"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"shortName": "TuranSec"
},
"references": [
{
"name": "Official product page",
"url": "https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/"
},
{
"name": "Firmware download",
"url": "https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Hidden Functionality Enables Remote Telnet Activation via /goform/setSysTools in Nexxt Nebula 300+",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
"assignerShortName": "TuranSec",
"cveId": "CVE-2026-31847",
"datePublished": "2026-03-23T12:07:05.062Z",
"dateReserved": "2026-03-09T18:20:23.399Z",
"dateUpdated": "2026-03-26T10:52:50.115Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}