What’s Vulnerable › Vulnerabilities

CVE-2025-49091

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-06-11 · updated 2026-06-17
• Weakness: CWE-670

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 products

• KDE Konsole: before 25.04.2 — fixed in 25.04.2

How to fix

Upgrade to a fixed version: KDE Konsole 25.04.2. Check the vendor advisory for mitigations.

References

• https://invent.kde.org/utilities/konsole/-/commit/09d20dea109050b4c02fb73095f327b5642a2b75
• https://invent.kde.org/utilities/konsole/-/tags
• https://kde.org/info/security/advisory-20250609-1.txt
• https://konsole.kde.org/changelog.html
• https://proofnet.de/publikationen/konsole_rce.html
• https://www.openwall.com/lists/oss-security/2025/06/10/5
• https://lists.debian.org/debian-lts-announce/2025/06/msg00019.html

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