CVE-2026-24061 | BDVDB-2026-311580 Detail
GNUInetutils
Description#
telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment variable.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.
Weaknesses#
- CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
References#
- https://www.openwall.com/lists/oss-security/2026/01/20/2
- https://www.openwall.com/lists/oss-security/2026/01/20/8
- https://www.gnu.org/software/inetutils/
- https://lists.gnu.org/archive/html/bug-inetutils/2026-01/msg00004.html
- https://codeberg.org/inetutils/inetutils/commit/fd702c02497b2f398e739e3119bed0b23dd7aa7b
- https://codeberg.org/inetutils/inetutils/commit/ccba9f748aa8d50a38d7748e2e60362edd6a32cc
- https://www.vicarius.io/vsociety/posts/cve-2026-24061-detection-script-remote-authentication-bypass-in-gnu-inetutils-package
- https://www.vicarius.io/vsociety/posts/cve-2026-24061-mitigation-script-remote-authentication-bypass-in-gnu-inetutils-package
- https://redteam.ae/blog/cve-2026-24061-inetutils-telnetd-root-bypass
- https://www.openwall.com/lists/oss-security/2026/01/20/2#:~:text=root@...a%3A~%20USER='
- https://www.labs.greynoise.io/grimoire/2026-01-22-f-around-and-find-out-18-hours-of-unsolicited-houseguests/index.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24061
- http://www.openwall.com/lists/oss-security/2026/01/22/1
- https://lists.debian.org/debian-lts-announce/2026/01/msg00025.html
Exploit#
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.