CVE-2025-49091

A flaw was found in Konsole. The application's handling of URLs using scheme handlers like ssh://, telnet://, or rlogin:// allows a remote attacker to trigger arbitrary code execution. This issue occurs when a user opens a specially crafted URL, bypassing authentication checks. Consequently, a malicious URL can be used to execute commands on the system.

This vulnerability was rated as an IMPORTANT vulnerability because the Konsole's handling of URLs containing scheme handlers such as ssh://, telnet://, or rlogin://. When a user opens a specially crafted URL, Konsole automatically processes the scheme without adequate validation or authentication enforcement. This behavior allows a remote attacker to craft malicious URLs that can trigger arbitrary command execution on the user’s system, resulting in a severe compromise of system confidentiality, integrity, and availability.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.