SB20261001148 - Ubuntu update for konsole
Published: October 1, 2026
Security Bulletin ID
SB20261001148
CSH 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 vulnerability.
1) Input validation error (CVE-ID: CVE-2025-49091)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of telnet://URL scheme. A remote attacker can trick the victim into clicking on a specially crafted URL and execute arbitrary console commands on the system with privileges of the current user.
The vulnerability affects installations without telnet client installed.
Remediation
Install update from vendor's website.