SB2026021929 - Ubuntu update for inetutils
Published: February 19, 2026
Security Bulletin ID
SB2026021929
Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Neutralization of Argument Delimiters in a Command (CVE-ID: CVE-2026-24061)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to improper input validation when processing attacker-controlled USER environment variable. A remote non-authenticated attacker can simply connect to the remote server with a specially crafted environment variable and obtain root privileges.
Exploitation example:
USER='-f root' telnet -a <host>
Remediation
Install update from vendor's website.