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CVE-2026-4254

Tenda AC8 HTTP Endpoint SysToolChangePwd doSystemCmd stack-based overflow

CVSS 9.3 CRITICALEPSS 0.9%CWE-119CWE-121
Vexday Risk Score
28Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 9.3EPSS 0.9%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
16 Mar 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
A weakness has been identified in Tenda AC8 up to 16.03.50.11. This vulnerability affects the function doSystemCmd of the file /goform/SysToolChangePwd of the component HTTP Endpoint. This manipulation of the argument local_2c causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
Tenda · AC8

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References
https://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysToolChangePwd_BOF.mdhttps://vuldb.com/?ctiid.351212https://vuldb.com/?id.351212https://vuldb.com/?submit.771773https://www.tenda.com.cn/