CVE-2026-86300 (GCVE-0-2026-86300)
Vulnerability from cvelistv5 – Published: 2026-09-07 11:30 – Updated: 2026-09-08 15:03
VLAI
EPSS
VEX
Title
Tenda AC9 Web Management R7WebsSecurityHandler improper authentication
Summary
A flaw has been found in Tenda AC9 15.03.05.14. This impacts the function R7WebsSecurityHandler of the component Web Management. This manipulation causes improper authentication. The attack may be initiated remotely. The exploit has been published and may be used.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:03 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/399464 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/399464/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-86300 | third-party-advisory |
| https://vuldb.com/submit/906606 | third-party-advisory |
| https://vuldb.com/submit/906607 | third-party-advisory |
| https://vuldb.com/submit/906608 | third-party-advisory |
| https://github.com/limou89/somevul/blob/main/Tend… | related |
| https://github.com/limou89/somevul/blob/main/Tend… | exploit |
| https://www.tenda.com.cn/ | product |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-86300",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-08T15:03:18.638512Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-08T15:03:32.769Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/limou89/somevul/blob/main/Tenda_AC9_getProduct_Info_Disclosure.md"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:*"
],
"modules": [
"Web Management"
],
"product": "AC9",
"vendor": "Tenda",
"versions": [
{
"status": "affected",
"version": "15.03.05.14"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "sleep (VulDB User)"
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw has been found in Tenda AC9 15.03.05.14. This impacts the function R7WebsSecurityHandler of the component Web Management. This manipulation causes improper authentication. The attack may be initiated remotely. The exploit has been published and may be used."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
"version": "4.0"
}
},
{
"cvssV3_1": {
"baseScore": 7.3,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
"version": "3.1"
}
},
{
"cvssV3_0": {
"baseScore": 7.3,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
"version": "3.0"
}
},
{
"cvssV2_0": {
"baseScore": 7.5,
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR",
"version": "2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"description": "Improper Authentication",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-07T11:30:09.363Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-399464 | Tenda AC9 Web Management R7WebsSecurityHandler improper authentication",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/vuln/399464"
},
{
"name": "VDB-399464 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/vuln/399464/cti"
},
{
"name": "CVE-2026-86300 | CVE Analysis and Report",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/cve/CVE-2026-86300"
},
{
"name": "Submit #906606 | Tenda AC9 V15.03.05.14 Information Disclosure",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/906606"
},
{
"name": "Submit #906607 | Tenda AC9 V15.03.05.14_multi / V15.03.05.16_multi Improper Access Controls (Duplicate)",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/906607"
},
{
"name": "Submit #906608 | Tenda AC9 V15.03.05.14_multi / V15.03.05.16_multi Improper Access Controls (Duplicate)",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/906608"
},
{
"tags": [
"related"
],
"url": "https://github.com/limou89/somevul/blob/main/Tenda_AC9_getProduct_Info_Disclosure.md"
},
{
"tags": [
"exploit"
],
"url": "https://github.com/limou89/somevul/blob/main/Tenda_AC9_fast_setting_wifi_set_Unauth_Password.md"
},
{
"tags": [
"product"
],
"url": "https://www.tenda.com.cn/"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-09-06T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-09-06T02:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-09-06T18:38:25.000Z",
"value": "VulDB entry last update"
}
],
"title": "Tenda AC9 Web Management R7WebsSecurityHandler improper authentication",
"x_generator": [
"VulDB PVTS v202609"
]
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-86300",
"datePublished": "2026-09-07T11:30:09.363Z",
"dateReserved": "2026-09-06T16:33:21.215Z",
"dateUpdated": "2026-09-08T15:03:32.769Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-86300",
"date": "2026-09-22",
"epss": "0.00488",
"percentile": "0.41096"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"cpes": [
"cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:*"
],
"modules": [
"Web Management"
],
"product": "AC9",
"vendor": "Tenda",
"versions": [
{
"status": "affected",
"version": "15.03.05.14"
}
]
}
],
"source": "cna@vuldb.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw has been found in Tenda AC9 15.03.05.14. This impacts the function R7WebsSecurityHandler of the component Web Management. This manipulation causes improper authentication. The attack may be initiated remotely. The exploit has been published and may be used."
}
],
"id": "CVE-2026-86300",
"lastModified": "2026-09-08T16:18:27.630",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"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": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.4,
"source": "cna@vuldb.com",
"type": "Secondary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"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": "NONE",
"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:N/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-2026-86300",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-08T15:03:18.638512Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-09-07T12:17:21.520",
"references": [
{
"source": "cna@vuldb.com",
"url": "https://github.com/limou89/somevul/blob/main/Tenda_AC9_fast_setting_wifi_set_Unauth_Password.md"
},
{
"source": "cna@vuldb.com",
"url": "https://github.com/limou89/somevul/blob/main/Tenda_AC9_getProduct_Info_Disclosure.md"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/cve/CVE-2026-86300"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/submit/906606"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/submit/906607"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/submit/906608"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/vuln/399464"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/vuln/399464/cti"
},
{
"source": "cna@vuldb.com",
"url": "https://www.tenda.com.cn/"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"url": "https://github.com/limou89/somevul/blob/main/Tenda_AC9_getProduct_Info_Disclosure.md"
}
],
"sourceIdentifier": "cna@vuldb.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-287"
}
],
"source": "cna@vuldb.com",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-86300",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-08T15:03:18.638512Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-08T15:03:02.739Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/limou89/somevul/blob/main/Tenda_AC9_getProduct_Info_Disclosure.md"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:*"
],
"modules": [
"Web Management"
],
"product": "AC9",
"vendor": "Tenda",
"versions": [
{
"status": "affected",
"version": "15.03.05.14"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "sleep (VulDB User)"
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw has been found in Tenda AC9 15.03.05.14. This impacts the function R7WebsSecurityHandler of the component Web Management. This manipulation causes improper authentication. The attack may be initiated remotely. The exploit has been published and may be used."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
"version": "4.0"
}
},
{
"cvssV3_1": {
"baseScore": 7.3,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
"version": "3.1"
}
},
{
"cvssV3_0": {
"baseScore": 7.3,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
"version": "3.0"
}
},
{
"cvssV2_0": {
"baseScore": 7.5,
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR",
"version": "2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"description": "Improper Authentication",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-07T11:30:09.363Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-399464 | Tenda AC9 Web Management R7WebsSecurityHandler improper authentication",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/vuln/399464"
},
{
"name": "VDB-399464 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/vuln/399464/cti"
},
{
"name": "CVE-2026-86300 | CVE Analysis and Report",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/cve/CVE-2026-86300"
},
{
"name": "Submit #906606 | Tenda AC9 V15.03.05.14 Information Disclosure",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/906606"
},
{
"name": "Submit #906607 | Tenda AC9 V15.03.05.14_multi / V15.03.05.16_multi Improper Access Controls (Duplicate)",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/906607"
},
{
"name": "Submit #906608 | Tenda AC9 V15.03.05.14_multi / V15.03.05.16_multi Improper Access Controls (Duplicate)",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/906608"
},
{
"tags": [
"related"
],
"url": "https://github.com/limou89/somevul/blob/main/Tenda_AC9_getProduct_Info_Disclosure.md"
},
{
"tags": [
"exploit"
],
"url": "https://github.com/limou89/somevul/blob/main/Tenda_AC9_fast_setting_wifi_set_Unauth_Password.md"
},
{
"tags": [
"product"
],
"url": "https://www.tenda.com.cn/"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-09-06T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-09-06T02:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-09-06T18:38:25.000Z",
"value": "VulDB entry last update"
}
],
"title": "Tenda AC9 Web Management R7WebsSecurityHandler improper authentication",
"x_generator": [
"VulDB PVTS v202609"
]
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-86300",
"datePublished": "2026-09-07T11:30:09.363Z",
"dateReserved": "2026-09-06T16:33:21.215Z",
"dateUpdated": "2026-09-08T15:03:32.769Z",
"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…