CVE-2025-6751 - CVE House

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Status published High CVE-2025-6751

Linksys E8450 HTTP POST Request portal.cgi set_device_language buffer overflow

8.7 CVSS

Vulnerability Description

A vulnerability, which was classified as critical, was found in Linksys E8450 up to 1.2.00.360516. This affects the function set_device_language of the file portal.cgi of the component HTTP POST Request Handler. The manipulation of the argument dut_language leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

CH13hh (VulDB User)

References

More from Linksys

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Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 upload.cgi cgiMain os command injection

Linksys E1700 systemCommand os command injection

Linksys E1700 QoSSetup stack-based overflow

Linksys E1700 setSysAdm stack-based overflow

Linksys E1700 setWan stack-based overflow

Affected Vendor

Linksys

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Affected Software

E8450

Vulnerable Versions:

1.2.00.360516

Timeline

Official Publish: June 27th, 2025

Last Modified: June 27th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Weaknesses (CWE)

CWE-120 CWE-119

MITRE ATT&CK TTPs

T1203 Exploitation for Client Execution

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1055 Process Injection

Defense Evasion

T1105 Ingress Tool Transfer

Command and Control