CVE-2026-5030 (GCVE-0-2026-5030)
Vulnerability from cvelistv5 – Published: 2026-03-29 03:30 – Updated: 2026-03-30 13:28
VLAI
EPSS
VEX
Title
Totolink NR1800X Telnet Service cstecgi.cgi NTPSyncWithHost command injection
Summary
A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-30 13:28 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/353952 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/353952/cti | signaturepermissions-required |
| https://vuldb.com/submit/778529 | third-party-advisory |
| https://lavender-bicycle-a5a.notion.site/TOTOLINK… | exploit |
| https://www.totolink.net/ | product |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-5030",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-30T13:28:35.305554Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-30T13:28:48.091Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:o:totolink:nr1800x_firmware:*:*:*:*:*:*:*:*"
],
"modules": [
"Telnet Service"
],
"product": "NR1800X",
"vendor": "Totolink",
"versions": [
{
"status": "affected",
"version": "9.1.0u.6279_B20210910"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "wxhwxhwxh_mie (VulDB User)"
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
"version": "4.0"
}
},
{
"cvssV3_1": {
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
"version": "3.1"
}
},
{
"cvssV3_0": {
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
"version": "3.0"
}
},
{
"cvssV2_0": {
"baseScore": 6.5,
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR",
"version": "2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-77",
"description": "Command Injection",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-74",
"description": "Injection",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-29T03:30:15.254Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-353952 | Totolink NR1800X Telnet Service cstecgi.cgi NTPSyncWithHost command injection",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/vuln/353952"
},
{
"name": "VDB-353952 | CTI Indicators (IOB, IOC, TTP, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/vuln/353952/cti"
},
{
"name": "Submit #778529 | TOTOLINK NR1800X NR1800X_Firmware V9.1.0u.6279_B20210910 Command Injection",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/778529"
},
{
"tags": [
"exploit"
],
"url": "https://lavender-bicycle-a5a.notion.site/TOTOLINK-NR1800X-NTPSyncWithHost-32153a41781f8032afebc0802b704e9c?source=copy_link"
},
{
"tags": [
"product"
],
"url": "https://www.totolink.net/"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-03-27T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-03-27T01:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-03-27T17:01:03.000Z",
"value": "VulDB entry last update"
}
],
"title": "Totolink NR1800X Telnet Service cstecgi.cgi NTPSyncWithHost command injection"
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-5030",
"datePublished": "2026-03-29T03:30:15.254Z",
"dateReserved": "2026-03-27T15:55:59.708Z",
"dateUpdated": "2026-03-30T13:28:48.091Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-5030",
"date": "2026-09-22",
"epss": "0.02508",
"percentile": "0.84051"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"cpes": [
"cpe:2.3:o:totolink:nr1800x_firmware:*:*:*:*:*:*:*:*"
],
"modules": [
"Telnet Service"
],
"product": "NR1800X",
"vendor": "Totolink",
"versions": [
{
"status": "affected",
"version": "9.1.0u.6279_B20210910"
}
]
}
],
"source": "cna@vuldb.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:totolink:nr1800x_firmware:9.1.0u.6279_b20210910:*:*:*:*:*:*:*",
"matchCriteriaId": "5CFB91EF-6C07-45CB-AA17-A3D937FC9D7C",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:totolink:nr1800x:-:*:*:*:*:*:*:*",
"matchCriteriaId": "B4D2D0E8-2678-4238-8229-83450ECA1153",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used."
},
{
"lang": "es",
"value": "Se ha encontrado una vulnerabilidad en Totolink NR1800X 9.1.0u.6279_B20210910. Este problema afecta a la funci\u00f3n NTPSyncWithHost del archivo /cgi-bin/cstecgi.cgi del componente Servicio Telnet. La manipulaci\u00f3n del argumento host_time conduce a inyecci\u00f3n de comandos. El ataque puede iniciarse de forma remota. El exploit ha sido divulgado al p\u00fablico y puede ser utilizado."
}
],
"id": "CVE-2026-5030",
"lastModified": "2026-06-17T10:58:18.290",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "cna@vuldb.com",
"type": "Secondary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.4,
"source": "cna@vuldb.com",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 2.1,
"baseSeverity": "LOW",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "PROOF_OF_CONCEPT",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "cna@vuldb.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-5030",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-30T13:28:35.305554Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-03-29T05:15:55.603",
"references": [
{
"source": "cna@vuldb.com",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://lavender-bicycle-a5a.notion.site/TOTOLINK-NR1800X-NTPSyncWithHost-32153a41781f8032afebc0802b704e9c?source=copy_link"
},
{
"source": "cna@vuldb.com",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "https://vuldb.com/submit/778529"
},
{
"source": "cna@vuldb.com",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "https://vuldb.com/vuln/353952"
},
{
"source": "cna@vuldb.com",
"tags": [
"Permissions Required",
"VDB Entry"
],
"url": "https://vuldb.com/vuln/353952/cti"
},
{
"source": "cna@vuldb.com",
"tags": [
"Product"
],
"url": "https://www.totolink.net/"
}
],
"sourceIdentifier": "cna@vuldb.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-74"
},
{
"lang": "en",
"value": "CWE-77"
}
],
"source": "cna@vuldb.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-77"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-30T05:00:46+00:00",
"cve": "CVE-2026-5030",
"id": "CVE-2026-5030",
"initial_release_date": "2026-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Totolink NR1800X Telnet Service cstecgi.cgi NTPSyncWithHost command injection",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5030.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-5030",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-30T13:28:35.305554Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-30T13:28:40.967Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:o:totolink:nr1800x_firmware:*:*:*:*:*:*:*:*"
],
"modules": [
"Telnet Service"
],
"product": "NR1800X",
"vendor": "Totolink",
"versions": [
{
"status": "affected",
"version": "9.1.0u.6279_B20210910"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "wxhwxhwxh_mie (VulDB User)"
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
"version": "4.0"
}
},
{
"cvssV3_1": {
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
"version": "3.1"
}
},
{
"cvssV3_0": {
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
"version": "3.0"
}
},
{
"cvssV2_0": {
"baseScore": 6.5,
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR",
"version": "2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-77",
"description": "Command Injection",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-74",
"description": "Injection",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-29T03:30:15.254Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-353952 | Totolink NR1800X Telnet Service cstecgi.cgi NTPSyncWithHost command injection",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/vuln/353952"
},
{
"name": "VDB-353952 | CTI Indicators (IOB, IOC, TTP, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/vuln/353952/cti"
},
{
"name": "Submit #778529 | TOTOLINK NR1800X NR1800X_Firmware V9.1.0u.6279_B20210910 Command Injection",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/778529"
},
{
"tags": [
"exploit"
],
"url": "https://lavender-bicycle-a5a.notion.site/TOTOLINK-NR1800X-NTPSyncWithHost-32153a41781f8032afebc0802b704e9c?source=copy_link"
},
{
"tags": [
"product"
],
"url": "https://www.totolink.net/"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-03-27T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-03-27T01:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-03-27T17:01:03.000Z",
"value": "VulDB entry last update"
}
],
"title": "Totolink NR1800X Telnet Service cstecgi.cgi NTPSyncWithHost command injection"
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-5030",
"datePublished": "2026-03-29T03:30:15.254Z",
"dateReserved": "2026-03-27T15:55:59.708Z",
"dateUpdated": "2026-03-30T13:28:48.091Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…