Vulnerability in KDE Konsole
CVE-2025-49091
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.007 (50.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001
Affected products
- KDE Konsole — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- invent.kde.org/utilities/konsole/-/tags
- konsole.kde.org/changelog.html
- www.openwall.com/lists/oss-security/2025/06/10/5
- invent.kde.org/utilities/konsole/-/commit/09d20dea109050b4c02fb73095f327b5642a2…
- kde.org/info/security/advisory-20250609-1.txt
- proofnet.de/publikationen/konsole_rce.html
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-49091?
- CVE-2025-49091 is a high-severity vulnerability in KDE Konsole, classified under Always-Incorrect Control Flow Implementation. CVSS score: 8.2/10. Published 2025-06-11.
- How severe is CVE-2025-49091?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2025-49091 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.