HIGH 8.5 NVD
CVE-2026-121931
A security vulnerability has been detected in Linksys WRT54GL 4.30.18. The impacted element is the function system of the file apply.cgi of the component Tracer
A security vulnerability has been detected in Linksys WRT54GL 4.30.18. The impacted element is the function system of the file apply.cgi of the component Traceroute Diagnostic Function. Such manipulation of the argument traceroute_ip leads to os command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer.
References
- https://github.com/Zimo-666/WRT54GL-cves/tree/main/CVE-TBD-traceroute-ip-command-injection
- https://vuldb.com/cve/CVE-2026-121931
- https://vuldb.com/submit/1024099
- https://vuldb.com/vuln/431043
- https://vuldb.com/vuln/431043/cti
This high severity vulnerability with a CVSS score of 8.5 was published on 2026-11-04 via NVD.
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