CVE-2026-24061

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

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://codeberg.org/inetutils/inetutils/commit/ccba9f748aa8d50a38d7748e2e60362edd6a32cc	Patch
https://codeberg.org/inetutils/inetutils/commit/fd702c02497b2f398e739e3119bed0b23dd7aa7b	Patch
https://lists.gnu.org/archive/html/bug-inetutils/2026-01/msg00004.html	Mitigation Vendor Advisory
https://www.gnu.org/software/inetutils/	Product
https://www.openwall.com/lists/oss-security/2026/01/20/2	Mailing List
https://www.openwall.com/lists/oss-security/2026/01/20/8	Mailing List
http://www.openwall.com/lists/oss-security/2026/01/22/1	Mailing List
https://lists.debian.org/debian-lts-announce/2026/01/msg00025.html	Mailing List Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24061	US Government Resource
https://www.labs.greynoise.io/grimoire/2026-01-22-f-around-and-find-out-18-hours-of-unsolicited-houseguests/index.html	Exploit Third Party Advisory
https://www.openwall.com/lists/oss-security/2026/01/20/2#:~:text=root@...a%3A~%20USER='	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:inetutils:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-01-21 07:16

Updated : 2026-01-30 13:28

NVD link : CVE-2026-24061

Mitre link : CVE-2026-24061

CVE.ORG link : CVE-2026-24061

JSON object : View

Products Affected

gnu

inetutils

debian

debian_linux

CWE

CWE-88

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

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