CVE-2025-15356
HIGHTenda AC20 Firmware <= 16.03.08.12 - Buffer Overflow via PowerSaveSet sscanf Argument
Title source: llmDescription
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.
References (6)
Core 6
Core References
Third Party Advisory, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.338742
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.338742
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.726360
Exploit, Third Party Advisory broken-link
exploit
https://github.com/xyh4ck/iot_poc/tree/main/Tenda%20AC20_Buffer_Overflow
Exploit, Third Party Advisory broken-link
exploit
https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC20_Buffer_Overflow/Tenda%20AC20_Buffer_Overflow.md#poc
Product product
https://www.tenda.com.cn/
Scores
CVSS v3
8.8
EPSS
0.0345
EPSS Percentile
87.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-119
CWE-120
Status
published
Products (1)
tenda/ac20_firmware
< 16.03.08.12
Published
Dec 30, 2025
Tracked Since
Feb 18, 2026