Is there a public exploit for CVE-2026-121930?

No public exploit for CVE-2026-121930 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-121930?

CVE-2026-121930 scores CVSS 9.4 (v4.0), rated critical.

What does CVE-2026-121930 affect?

CVE-2026-121930 affects Linksys WRT54GL.

9.4 Critical

A weakness has been identified in Linksys WRT54GL 4.30.18.

CVE-2026-121930

A weakness has been identified in Linksys WRT54GL 4.30.18. The affected element is the function system of the file apply.cgi of the component Ping Diagnostic. This manipulation of the argument pingip causes os command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. 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.

Assessment

CVSS: 9.4 (v4.0)
Severity: Critical
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 4 November 2026
Last updated: 4 November 2026
Affected: Linksys · WRT54GL
Assigner: VulDB

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

At the source

EUVD (ENISA)

References

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