CVE-2026-121931: Linksys WRT54GL Traceroute Diagnostic Function apply.cgi system os command injection
Linksys · WRT54GL
Affected: Linksys WRT54GL · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 86% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Linksys · WRT54GL4.30.18
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Possible (1 to 10%). EPSS between 1% and 10%.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Linksys
- Published
- November 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-121931 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.