Vulnerability · Published Jun 11, 2025 · Assigned by mitre
CVE-2025-49091
High 8.2
In plain English
A high-severity security flaw in Konsole from KDE. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | konsole | 4:22.12.3-1+deb12u1 | DEBIAN-CVE-2025-49091 |
| Debian:12 | konsole | 4:22.12.3-1+deb12u1 | DSA-5945-1 |
| Debian:13 | konsole | 4:25.04.0-2 | DEBIAN-CVE-2025-49091 |
| Debian:14 | konsole | 4:25.04.0-2 | DEBIAN-CVE-2025-49091 |
| Ubuntu:25.10 | konsole | no fix listed | UBUNTU-CVE-2025-49091 |
Affected products (as reported)
Weakness: CWE-670 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L
References
- https://invent.kde.org/utilities/konsole/-/tags
- https://konsole.kde.org/changelog.html
- https://www.openwall.com/lists/oss-security/2025/06/10/5
- https://invent.kde.org/utilities/konsole/-/commit/09d20dea109050b4c02fb73095f327b5642a2b75
- https://kde.org/info/security/advisory-20250609-1.txt
- https://proofnet.de/publikationen/konsole_rce.html
- https://lists.debian.org/debian-lts-announce/2025/06/msg00019.html