CVE-2026-24061
GNU InetUtils contains an argument injection vulnerability in telnetd that could allow for remote authentication bypass via a "-f root" value for…
Browse: All 2026 CVEs · All vendors
- CVSS score
- 9.8 Critical
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- CISA KEV
- Yes — actively exploited (added 2026-01-26, remediation due 2026-02-16)
- Weakness (CWE)
- CWE-88
- Published
- 2026-01-21
- Last modified
- 2026-06-17
- NVD status
- Analyzed
Description
GNU InetUtils contains an argument injection vulnerability in telnetd that could allow for remote authentication bypass via a "-f root" value for the USER environment variable.
Affected products
- gnu inetutils
- debian debian linux
Affected ranges per NVD CPE data; confirm exact versions in the vendor advisory.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Federal remediation deadline: 2026-02-16.
How to prioritize this
This vulnerability is on the CISA KEV list, meaning it is being actively exploited — treat it as urgent regardless of the raw CVSS number. Use the live CVE lookup for the latest NVD data, and the CVSS 3.1 calculator to model your own environmental score. For the actively exploited vulnerabilities that matter this week, read The Exploit HQ daily security brief.
References
- https://codeberg.org/inetutils/inetutils/commit/ccba9f748aa8d50a38d7748e2e60362edd6a32cc
- https://codeberg.org/inetutils/inetutils/commit/fd702c02497b2f398e739e3119bed0b23dd7aa7b
- https://lists.gnu.org/archive/html/bug-inetutils/2026-01/msg00004.html
- https://www.gnu.org/software/inetutils/
- https://www.openwall.com/lists/oss-security/2026/01/20/2
- https://www.openwall.com/lists/oss-security/2026/01/20/8
- 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
FAQ
Is CVE-2026-24061 actively exploited?
Yes. CISA added CVE-2026-24061 to its Known Exploited Vulnerabilities (KEV) catalog on 2026-01-26, with a federal remediation deadline of 2026-02-16. A KEV listing means real-world exploitation is confirmed, so patching this should be prioritized above many higher-CVSS bugs that aren't being exploited.
What is the CVSS score of CVE-2026-24061?
CVE-2026-24061 has a CVSS base score of 9.8 (Critical). Its vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Related vulnerabilities
- CVE-2014-6278 — GNU GNU Bash
- CVE-2023-4911 — GNU GNU C Library
- CVE-2014-6271 — GNU Bourne-Again Shell (Bash)
- CVE-2014-7169 — GNU Bourne-Again Shell (Bash)
- CVE-2026-86060 — MikroTik RouterOS
- CVE-2016-10033 — PHP PHPMailer
Data source: NVD & CISA KEV. Shown as-is; nothing added. Last generated from NVD data — re-check the live tool for updates.
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