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CVE-2025-15356

Tenda AC20 PowerSaveSet sscanf buffer overflow

CVSS 8.7 HIGHEPSS 3.4%CWE-119CWE-120
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 8.7EPSS 3.4%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
30 Dec 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The impacted element is the function sscanf of the file /goform/PowerSaveSet. The manipulation of the argument powerSavingEn/time/powerSaveDelay/ledCloseType leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
Tenda · AC20

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References
https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC20_Buffer_Overflow/Tenda%20AC20_Buffer_Overflow.md#pochttps://github.com/xyh4ck/iot_poc/tree/main/Tenda%20AC20_Buffer_Overflowhttps://vuldb.com/?ctiid.338742https://vuldb.com/?id.338742https://vuldb.com/?submit.726360https://www.tenda.com.cn/