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CVE-2026-24061

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Date: January 21, 2026

telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment variable.

Severity Score

9.8

Related Resources (13)

Url: https://nvd.nist.gov/vuln/detail/CVE-2026-24061

Url: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24061

Url: https://www.openwall.com/lists/oss-security/2026/01/20/2

Url: http://www.openwall.com/lists/oss-security/2026/01/22/1

Url: https://www.labs.greynoise.io/grimoire/2026-01-22-f-around-and-find-out-18-hours-of-unsolicited-houseguests/index.html

Url: https://codeberg.org/inetutils/inetutils/commit/fd702c02497b2f398e739e3119bed0b23dd7aa7b

Url: https://codeberg.org/inetutils/inetutils/commit/ccba9f748aa8d50a38d7748e2e60362edd6a32cc

Url: https://www.openwall.com/lists/oss-security/2026/01/20/2#:~:text=root@...a%3A~%20USER='

Url: https://lists.debian.org/debian-lts-announce/2026/01/msg00025.html

Url: https://lists.gnu.org/archive/html/bug-inetutils/2026-01/msg00004.html

Url: https://www.openwall.com/lists/oss-security/2026/01/20/8

Url: https://www.gnu.org/software/inetutils/

Url: https://www.mend.io/vulnerability-database/CVE-2026-24061

Severity Score

9.8

Weakness Type (CWE)

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

CWE-88

CVSS v3.1

Base Score:	9.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

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