# CVE-2025-49091: konsole: KDE Konsole before 25.04.2 allows remote code execution in a certain scenario

CVE-2025-49091 is fixed in 2 products on 1 platform, first by konsole 4:17.12.3-1ubuntu1+esm1, released June 10, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-49091
- Priority: High
- CVSS: 8.2 (Medium)
- EPSS: 0.0072
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 10, 2025

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | konsole Debian 11.6 (bullseye) | 4:20.12.3-1+deb11u1 | [DLA-4220-1](https://patchblox.com/security/data/fix/linux/dla-4220-1.md) | Jun 17, 2025 |
| Linux | konsole Debian 12.15 (bookworm) | 4:22.12.3-1+deb12u1 | [DSA-5945-1](https://patchblox.com/security/data/fix/linux/dsa-5945-1.md) | Jun 20, 2025 |
| Linux | konsole Debian 13.5 (trixie) | 4:25.04.0-2 | [DEBIAN-CVE-2025-49091](https://patchblox.com/security/data/fix/linux/debian-cve-2025-49091.md) | Jun 11, 2025 |
| Linux | konsole Debian 14 | 4:25.04.0-2 | [DEBIAN-CVE-2025-49091](https://patchblox.com/security/data/fix/linux/debian-cve-2025-49091.md) | Jun 11, 2025 |
| Linux | konsole Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-1ubuntu1+esm1 | [konsole 4:17.12.3-1ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-konsole-4-17.12.3-1ubuntu1-esm1.md) | Jun 10, 2025 |
| Linux | konsole Ubuntu 20.04 LTS (focal) | 4:19.12.3-0ubuntu1+esm1 | [konsole 4:19.12.3-0ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-konsole-4-19.12.3-0ubuntu1-esm1.md) | Jun 10, 2025 |
| Linux | konsole Ubuntu 22.04.1 LTS (jammy) | 4:21.12.3-0ubuntu1+esm1 | [konsole 4:21.12.3-0ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-konsole-4-21.12.3-0ubuntu1-esm1.md) | Jun 10, 2025 |
| Linux | konsole Ubuntu 24.04.5 LTS (noble) | 4:23.08.5-0ubuntu4+esm1 | [konsole 4:23.08.5-0ubuntu4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-konsole-4-23.08.5-0ubuntu4-esm1.md) | Jun 10, 2025 |
| Linux | konsole-kpart Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-1ubuntu1+esm1 | [konsole-kpart 4:17.12.3-1ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-konsole-kpart-4-17.12.3-1ubuntu1-esm1.md) | Jun 10, 2025 |
| Linux | konsole-kpart Ubuntu 20.04 LTS (focal) | 4:19.12.3-0ubuntu1+esm1 | [konsole-kpart 4:19.12.3-0ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-konsole-kpart-4-19.12.3-0ubuntu1-esm1.md) | Jun 10, 2025 |
| Linux | konsole-kpart Ubuntu 22.04.1 LTS (jammy) | 4:21.12.3-0ubuntu1+esm1 | [konsole-kpart 4:21.12.3-0ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-konsole-kpart-4-21.12.3-0ubuntu1-esm1.md) | Jun 10, 2025 |
| Linux | konsole-kpart Ubuntu 24.04.5 LTS (noble) | 4:23.08.5-0ubuntu4+esm1 | [konsole-kpart 4:23.08.5-0ubuntu4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-konsole-kpart-4-23.08.5-0ubuntu4-esm1.md) | Jun 10, 2025 |

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Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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