Vulnerability · Published Feb 21, 2026 · Assigned by VulDB
CVE-2026-2876Tenda A18 setBlackRule parse_macfilter_rule stack-based overflow
High 8.8
In plain English
A high-severity stack buffer overflow in A18 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.6%top 51.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was determined in Tenda A18 15.13.07.13. This affects the function parse_macfilter_rule of the file /goform/setBlackRule. This manipulation of the argument deviceList causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized.
Affected products (as reported)
Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-347114 | Tenda A18 setBlackRule parse_macfilter_rule stack-based overflow vdb-entry, technical-description
- VDB-347114 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #754675 | Tenda A18 V15.13.07.13 Stack-based Buffer Overflow third-party-advisory
- https://github.com/master-abc/cve/issues/38 exploit, issue-tracking
- https://www.tenda.com.cn/ product