CVE-2026-121930
A weakness has been identified in Linksys WRT54GL 4.30.18
- Risk score
- 55/100
- CVSS
- 9.1 v3.1
- Published
- 4 Nov 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 ping_ip causes os command injection. The attack can be initiated remotely. The exploit has been made available to the public a…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 9.1 critical
References
Original description
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 ping_ip 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.
Last activity 4 Nov 2026. Patch Forecast updates every hour.