CVE-2026-26731

TOTOLINK A3002RU V2.1.1-B20211108.1455 was discovered to contain a stack-based buffer overflow via the routernamer`parameter in the formDnsv6 function.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/0xmania/cve/tree/main/TOTOLINK-A3002RU-boa-formDnsv6-StackOverflow	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:totolink:a3002ru_firmware:2.1.1-b20211108.1455:*:*:*:*:*:*:*

cpe:2.3:h:totolink:a3002ru-v2:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-17 19:21

Updated : 2026-03-16 16:16

NVD link : CVE-2026-26731

Mitre link : CVE-2026-26731

CVE.ORG link : CVE-2026-26731

JSON object : View

Products Affected

totolink

a3002ru-v2
a3002ru_firmware

CWE

CWE-787

Out-of-bounds Write

CWE-121

Stack-based Buffer Overflow

{"id": "CVE-2026-26731", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.0, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.1}]}, "published": "2026-02-17T19:21:57.383", "references": [{"url": "https://github.com/0xmania/cve/tree/main/TOTOLINK-A3002RU-boa-formDnsv6-StackOverflow", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-121"}]}], "descriptions": [{"lang": "en", "value": "TOTOLINK A3002RU V2.1.1-B20211108.1455 was discovered to contain a stack-based buffer overflow via the routernamer`parameter in the formDnsv6 function."}, {"lang": "es", "value": "Se descubri\u00f3 que TOTOLINK A3002RU V2.1.1-B20211108.1455 conten\u00eda un desbordamiento de b\u00fafer basado en pila a trav\u00e9s del par\u00e1metro 'routernamer'parameter en la funci\u00f3n formDnsv6."}], "lastModified": "2026-03-16T16:16:13.577", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:totolink:a3002ru_firmware:2.1.1-b20211108.1455:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "66928591-1CC8-47F3-ADDC-5F303CE700AF"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:totolink:a3002ru-v2:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "720DB583-0A2B-4538-88A4-F90D32FC67EE"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}