GNU InetUtils Argument Injection Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 26/01/2026. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| inetutils | ≥ 1.9.3, ≤ 2.7 |
telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment variable.
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