What is CVE-2025-11356?

CVE-2025-11356 is a high-severity vulnerability in Tenda Ac23, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2025-10-07.

How severe is CVE-2025-11356?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Tenda Ac23

CVE-2025-11356

A vulnerability was found in Tenda AC23 up to 16.03.07.52. Affected by this issue is the function sscanf of the file /goform/SetStaticRouteCfg. The manipulation of the argument list results in buffer overflow. It is possible to launch the…

Vulnerability class: Buffer Overflow

EPSS: 0.003 (50.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). 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.

Affected products

Tenda Ac23 — versions 16.03.07.0, 16.03.07.1, 16.03.07.2

Weakness classification (CWE)

References

VDB-327241 | Tenda AC23 SetStaticRouteCfg sscanf buffer overflow (vdb-entry, technical-description)
VDB-327241 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
Submit #664923 | Shenzhen Tenda Technology Co.,Ltd. AC23 <= V16.03.07.52 Buffer Overflow (third-party-advisory)
github.com/cymiao1978/cve/blob/main/12.md (exploit)
www.tenda.com.cn/ (product)

Frequently asked questions

What is CVE-2025-11356?: CVE-2025-11356 is a high-severity vulnerability in Tenda Ac23, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2025-10-07.
How severe is CVE-2025-11356?: High severity. CVSS v3 base score is 8.8 out of 10.