CVE-2025-15356

7.4 highEPSS 4.0%

High (7.4) in tenda ac20 firmware. EPSS 4.0% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

7.4 high

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

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 4.0% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-31)
CWEs: CWE-120, CWE-119
Published: 2025-12-30
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

tenda:ac20_firmware

References

https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC20_Buffer_Overflow/Tenda%20AC20_Buffer_Overflow.md#poc
https://github.com/xyh4ck/iot_poc/tree/main/Tenda%20AC20_Buffer_Overflow
https://vuldb.com/?ctiid.338742
https://vuldb.com/?id.338742
https://vuldb.com/?submit.726360

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