KDE Konsole prior 25.04.2 /bin/bash control flow

Summaryinfo

A vulnerability was found in KDE Konsole and classified as problematic. This affects an unknown part of the file /bin/bash. Such manipulation leads to control flow. This vulnerability is referenced as CVE-2025-49091. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in KDE Konsole. Affected by this issue is an unknown code of the file /bin/bash. The manipulation with an unknown input leads to a control flow vulnerability. Using CWE to declare the problem leads to CWE-670. The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated. Impacted is confidentiality, integrity, and availability. CVE summarizes:

KDE Konsole before 25.04.2 allows remote code execution in a certain scenario. It supports loading URLs from the scheme handlers such as a ssh:// or telnet:// or rlogin:// URL. This can be executed regardless of whether the ssh, telnet, or rlogin binary is available. In this mode, there is a code path where if that binary is not available, Konsole falls back to using /bin/bash for the given arguments (i.e., the URL) provided. This allows an attacker to execute arbitrary code.

The advisory is available at invent.kde.org. This vulnerability is handled as CVE-2025-49091 since 05/31/2025. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 240150 (Debian dla-4220 : konsole - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 25.04.2 eliminates this vulnerability. The upgrade is hosted for download at konsole.kde.org. Applying the patch 09d20dea109050b4c02fb73095f327b5642a2b75 is able to eliminate this problem. The bugfix is ready for download at invent.kde.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (240150). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• KDE

Name

• Konsole

License

• open-source

Website

• Vendor: https://kde.org/

CPE 2.3info

• 🔍

CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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