CVE-2025-12611
criticalA vulnerability was identified in Tenda AC21 16.03.08.16.
Vendor / product: Tenda — ac21 firmware
A vulnerability was identified in Tenda AC21 16.03.08.16. This vulnerability affects the function formSetPPTPServer of the file /goform/SetPptpServerCfg. The manipulation of the argument startIp leads to buffer overflow. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2025-11-03 03:15
Modified: 2026-10-18 21:10
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:06 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
tenda / ac21_firmware 16.03.08.16
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/LX-LX88/cve/issues/10 cna@vuldb.com
- https://vuldb.com/?ctiid.330906 cna@vuldb.com
- https://vuldb.com/?id.330906 cna@vuldb.com
- https://vuldb.com/?submit.678491 cna@vuldb.com
- https://www.tenda.com.cn/ cna@vuldb.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗