CVE-2026-4254

CRITICAL 9.8

Tenda AC8 HTTP Endpoint SysToolChangePwd doSystemCmd stack-based overflow

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-121 CWE-119
Vendor	tenda
Product	ac8
Published	Mar 16, 2026
Last Updated	Mar 16, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Tenda / AC8

16.03.50.0 16.03.50.1 16.03.50.2 16.03.50.3 16.03.50.4 16.03.50.5 16.03.50.6 16.03.50.7 16.03.50.8 16.03.50.9 16.03.50.10 16.03.50.11

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 DigitalAndrew (VulDB User)