{"uuid": "5edc53d9-8ff2-4f8a-9fe6-e24bd3529bae", "vulnerability": {"vulnId": "CVE-2021-31755", "altId": []}, "gcve": {"origin_uuid": "405284c2-e461-4670-8979-7fd2c9755a60", "object_uuid": "5edc53d9-8ff2-4f8a-9fe6-e24bd3529bae"}, "status": {"exploited": true, "status_reason": "confirmed", "status_updated_at": "2021-11-03T00:00:00+00:00"}, "characteristics": {}, "timestamps": {"asserted_at": "2021-11-03T00:00:00Z", "recorded_at": "2026-02-02T13:24:01Z", "first_seen_at": "2021-11-03T00:00:00Z"}, "scope": {"notes": "KEV entry: Tenda AC11 Router Stack Buffer Overflow Vulnerability | Affected: Tenda / AC11 Router | Description: Tenda AC11 devices contain a stack buffer overflow vulnerability in /goform/setmac which allows attackers to execute code via a crafted post request. | Required action: Apply updates per vendor instructions. | Due date: 2021-11-17 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-31755"}, "evidence": [{"type": "vendor_report", "source": "cisa-kev", "signal": "successful_exploitation", "confidence": 0.8, "details": {"cwes": ["CWE-787"], "feed": "CISA Known Exploited Vulnerabilities Catalog", "product": "AC11 Router", "due_date": "2021-11-17", "date_added": "2021-11-03", "vendorProject": "Tenda", "vulnerabilityName": "Tenda AC11 Router Stack Buffer Overflow Vulnerability", "knownRansomwareCampaignUse": "Unknown"}}], "references": [{"id": "CVE-2021-31755", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-31755"}]}