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CVE-2026-24061
CRITICALCISA KEV9.8
Description
telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment variable.
CVE Details
CVSS v3.1 Score9.8
SeverityCRITICAL
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
Published1/21/2026
Last Modified2/11/2026
Sourcekev
Honeypot Sightings0
CISA KEV
VendorGNU
ProductInetUtils
Vulnerability NameGNU InetUtils Argument Injection Vulnerability
KEV Date Added2026-01-26
Remediation Due Date2026-02-16
Ransomware UseUnknown
Affected Products
debian:debian_linuxgnu:inetutils
Weaknesses (CWE)
CWE-88
References
https://codeberg.org/inetutils/inetutils/commit/ccba9f748aa8d50a38d7748e2e60362edd6a32cc(cve@mitre.org)
https://codeberg.org/inetutils/inetutils/commit/fd702c02497b2f398e739e3119bed0b23dd7aa7b(cve@mitre.org)
https://www.gnu.org/software/inetutils/(cve@mitre.org)
https://www.openwall.com/lists/oss-security/2026/01/20/2(cve@mitre.org)
https://www.openwall.com/lists/oss-security/2026/01/20/8(cve@mitre.org)
https://www.vicarius.io/vsociety/posts/cve-2026-24061-detection-script-remote-authentication-bypass-in-gnu-inetutils-package(cve@mitre.org)
https://www.vicarius.io/vsociety/posts/cve-2026-24061-mitigation-script-remote-authentication-bypass-in-gnu-inetutils-package(cve@mitre.org)
http://www.openwall.com/lists/oss-security/2026/01/22/1(af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2026/01/msg00025.html(af854a3a-2127-422b-91ae-364da2661108)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24061(134c704f-9b21-4f2e-91b3-4a467353bcc0)
https://www.labs.greynoise.io/grimoire/2026-01-22-f-around-and-find-out-18-hours-of-unsolicited-houseguests/index.html(134c704f-9b21-4f2e-91b3-4a467353bcc0)
https://www.openwall.com/lists/oss-security/2026/01/20/2#:~:text=root@...a%3A~%20USER='(134c704f-9b21-4f2e-91b3-4a467353bcc0)
IOC Correlations
No correlations recorded
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