Vulnerability · Published Sep 22, 2025 · Assigned by VulDB

CVE-2025-10803Tenda AC23 HTTP POST Request SetPptpServerCfg sscanf buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in AC23 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.8%top 42.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability has been found in Tenda AC23 up to 16.03.07.52. Affected by this vulnerability is the function sscanf of the file /goform/SetPptpServerCfg of the component HTTP POST Request Handler. Such manipulation of the argument startIp leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Affected products (as reported)

Vendor	Product	Versions
Tenda	AC23	16.03.07.016.03.07.116.03.07.216.03.07.316.03.07.416.03.07.516.03.07.616.03.07.7

Weakness: CWE-120, 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-325161 | Tenda AC23 HTTP POST Request SetPptpServerCfg sscanf buffer overflow vdb-entry, technical-description
VDB-325161 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #654237 | Tenda AC23 <= V16.03.07.52 Buffer Overflow third-party-advisory
https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC23-3/Tenda%20AC23%20Buffer%20overflow.md exploit
https://www.tenda.com.cn/ product