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CVE-2026-4254

CRITICAL

9.8

Description

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/16/2026

Last Modified3/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

tenda:ac8tenda:ac8_firmware

Weaknesses (CWE)

CWE-119CWE-121CWE-787

References

https://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysToolChangePwd_BOF.md(cna@vuldb.com)

https://vuldb.com/?ctiid.351212(cna@vuldb.com)

https://vuldb.com/?id.351212(cna@vuldb.com)

https://vuldb.com/?submit.771773(cna@vuldb.com)

https://www.tenda.com.cn/(cna@vuldb.com)

IOC Correlations

No correlations recorded

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