CVE-2026-4254

Tenda AC8 HTTP Endpoint SysToolChangePwd doSystemCmd stack-based overflow

Published: Mar 16, 2026Updated: Mar 20, 2026 Sources: CVE List NVDCWE-119

9.8CRITICAL

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-119 CWE-121 CWE-787

Affected Products

Tenda

commercial·CN

AC8

Networking Infrastructure

ac8 firmware

Networking Infrastructure

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

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References

https://vuldb.com/?id.351212

vuldb.com

https://vuldb.com/?ctiid.351212

vuldb.com

https://vuldb.com/?submit.771773

vuldb.com

and 2 more references View all →

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