CVE-2026-24061

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-24061
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-01-21 07:16:01 UTC
Updated2026-09-29 20:17:19 UTC
Descriptiontelnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment variable.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.989840000 probability, percentile 0.999290000 (date 2026-09-29)

CISA KEV: Listed on 2026-01-26; due 2026-02-16; ransomware use Unknown

Problem Types: CWE-88 | CWE-88 CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA Known Exploited Vulnerability

VendorGNU
ProductInetUtils
NameGNU InetUtils Argument Injection Vulnerability
Required ActionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
NotesThis vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://cgit.git.savannah.gnu.org/cgit/inetutils.git ; https://codeberg.org/inetutils/inetutils/commit/ccba9f748aa8d50a38d7748e2e60362edd6a32cc; https://codeberg.org/inetutils/inetutils/commit/fd702c02497b2f398e739e3119bed0b23dd7aa7b ; https://nvd.nist.gov/vuln/detail/CVE-2026-24061

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 11.0 All All All
Application Gnu Inetutils All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA GNU Inetutils affected 1.9.3 2.7 custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2026/01/msg00025.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
redteam.ae/blog/cve-2026-24061-inetutils-telnetd-root-bypass [email protected] redteam.ae
www.labs.greynoise.io/grimoire/2026-01-22-f-around-and-find-out-18-hours-of-unsolic... 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.labs.greynoise.io Exploit, Third Party Advisory
www.vicarius.io/vsociety/posts/cve-2026-24061-detection-script-remote-authent... [email protected] www.vicarius.io Third Party Advisory
codeberg.org/inetutils/inetutils/commit/ccba9f748aa8d50a38d7748e2e60362edd... [email protected] codeberg.org Patch
www.vicarius.io/vsociety/posts/cve-2026-24061-mitigation-script-remote-authen... [email protected] www.vicarius.io Mitigation, Third Party Advisory
www.openwall.com/lists/oss-security/2026/01/20/2 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.openwall.com Mailing List, Third Party Advisory
www.openwall.com/lists/oss-security/2026/01/22/1 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
codeberg.org/inetutils/inetutils/commit/fd702c02497b2f398e739e3119bed0b23d... [email protected] codeberg.org Patch
www.openwall.com/lists/oss-security/2026/01/20/8 [email protected] www.openwall.com Mailing List
www.openwall.com/lists/oss-security/2026/01/20/2 [email protected] www.openwall.com Mailing List
www.gnu.org/software/inetutils [email protected] www.gnu.org Product
lists.gnu.org/archive/html/bug-inetutils/2026-01/msg00004.html [email protected] lists.gnu.org Mitigation, Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

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