CVE-2025-11091Tenda AC21 SetStaticRouteCfg sscanf buffer overflow
Updated under an hour ago ()
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It affects Tenda AC21 and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
A security flaw has been discovered in Tenda AC21 up to 16.03.08.16. Affected by this vulnerability is the function sscanf of the file /goform/SetStaticRouteCfg. The manipulation of the argument list results in buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be exploited.
- CVSS
- 8.8 HIGH (v3.1, CNA)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
- Weakness (CWE)
- CWE-120, CWE-119
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Analyzed
- Record last updated
- Sep 29, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Tenda AC21 tenda:ac21 (from the name) | 16.03.08.0; 16.03.08.1; 16.03.08.2; 16.03.08.3; 16.03.08.4; 16.03.08.5; 16.03.08.6; 16.03.08.7; and 9 more ranges | CNA record |
tenda ac21_firmware tenda:ac21_firmware | through 16.03.08.16 | NVD |
References
- https://vuldb.com/?id.326173vdb-entry, technical-description, third-party-advisory
- https://vuldb.com/?ctiid.326173signature, permissions-required, vdb-entry
- https://vuldb.com/?submit.661806third-party-advisory, vdb-entry
- https://github.com/maximdevere/CVE2/issues/2exploit, issue-tracking
- https://www.tenda.com.cn/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.