{"schema_version":"1","data":[{"id":3723,"advisory_id":"b97821af-4bce-414b-bbfa-1a6644993055","revision":1,"source_id":"core-kev","source_url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-31755","source_published_at":"2021-11-03T00:00:00+00:00","published_at":"2026-10-24T21:40:02.164331+00:00","extraction_method":"structured","technologies":["ac11-router","core-kev"],"cve_ids":["CVE-2021-31755"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Tenda AC11 Router Stack Buffer Overflow Vulnerability","summary":"Tenda AC11 devices contain a stack buffer overflow vulnerability in /goform/setmac which allows attackers to execute code via a crafted post request. CISA required action: Apply updates per vendor instructions.","evidence":"kev:CVE-2021-31755","products":[{"name":{"value":"AC11 Router","evidence":"/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2021-31755","aliases":["CVE-2021-31755"],"affected":[],"modified":"2021-11-03T00:00:00.000Z","provider":"kev","references":["https://www.cisa.gov/known-exploited-vulnerabilities-catalog"],"exploitation":{"cwes":["CWE-787"],"cveID":"CVE-2021-31755","notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-31755","dueDate":"2021-11-17","product":"AC11 Router","dateAdded":"2021-11-03","vendorProject":"Tenda","requiredAction":"Apply updates per vendor instructions.","known_exploited":true,"shortDescription":"Tenda AC11 devices contain a stack buffer overflow vulnerability in /goform/setmac which allows attackers to execute code via a crafted post request.","vulnerabilityName":"Tenda AC11 Router Stack Buffer Overflow Vulnerability","knownRansomwareCampaignUse":"Unknown"}},"related_cves":[{"value":"CVE-2021-31755","evidence":"/cveID"}],"security_relevant":true,"severity_evidence":null}}],"next_after":3723,"next_before":3723}