OS command injection in Linksys E5350 via apply.cgi
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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-77.
Summary
Linksys E5350 from version 1.0.00.037 is affected by OS command injection (CWE-78). The ping_ip and traceroute_ip arguments are not neutralized before the system function in /wizard/apply.cgi runs them. An unauthenticated remote attacker can execute operating system commands without user interaction. A public exploit has been published.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
Description from the CNA
A vulnerability was detected in Linksys E5350 1.0.00.037. This affects the function system of the file /wizard/apply.cgi. Performing a manipulation of the argument ping_ip/traceroute_ip results in os command injection. The attack may be initiated remotely. The exploit is now 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
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
The sources list no fixed version for Linksys E5350.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
Timeline
- 2026-11-04 Threatist record created from CVE-2026-121932
- 2026-11-04 Alias added: GHSA-39mv-338q-hv4m
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-2026-121932 · CVE Program
- CVE-2026-121932 · NVD
- FIRST EPSS
- GHSA-39mv-338q-hv4m · GitHub Advisory Database · CC BY 4.0
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