Linksys E8450 HTTP POST Request portal.cgi set_device_language buffer overflow
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-6751
- 2026-10-03 Alias added: GHSA-6p5h-8mpm-mwqp
References
More Linksys vulnerabilities
- TI-2025-24206 Linksys Routers E/WAG/WAP/WES/WET/WRT-Series CVSS 4.0CRITICAL 10.0
- TI-2017-12715 OS command injection in Linksys WVBR0 CVSS 3.0CRITICAL 9.8
- TI-2026-70977 Stack-based buffer overflow in Linksys E1700 Mac Filter CVSS 4.0CRITICAL 10.0
- TI-2026-22199 Missing neutralization in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8
- TI-2026-22198 Missing neutralization in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8
- TI-2026-22197 Missing authentication in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-6751 · CVE Program
- CVE-2025-6751 · NVD
- FIRST EPSS
- GHSA-6p5h-8mpm-mwqp · GitHub Advisory Database · CC BY 4.0
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