KDE Konsole before 25.04.2 allows remote code execution in a certain scenario.
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Konsole (KDE) Fixed in 25.04.2
Red Hat 1 advisory
- RHSA-2025:12346 Released 2025-07-31 · Red Hat rating Importantkonsole security update
- Red Hat Enterprise Linux Server (v. 7 ELS) konsole-4.10.5-5.el7_9.1, konsole-part-4.10.5-5.el7_9.1
- Red Hat Enterprise Linux Server Optional (v. 7 ELS) konsole-4.10.5-5.el7_9.1, konsole-part-4.10.5-5.el7_9.1
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2025:12346 |
| Red Hat Enterprise Linux Server Optional (v. 7 ELS) | Fixed | RHSA-2025:12346 |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-49091
- 2026-10-03 Alias added: GHSA-h4f3-5vvh-xjgj
References
Other 6
- 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
More KDE vulnerabilities
- TI-2026-73452 OS command injection in KDE Dolphin via crafted folder names CVSS 4.0HIGH 7.1
- TI-2004-00806 Multiple integer overflows in xpdf 2.0 and 3.0, and other packages that use xpdf code… CVSS 2.0HIGH 10.0
- TI-2012-03853 Type confusion in KDE Konqueror CVSS 3.1HIGH 8.8
- TI-2004-00807 Multiple integer overflows in xpdf 3.0, and other packages that use xpdf code such as… CVSS 2.0HIGH 10.0
- TI-2005-00011 Multiple vulnerabilities in fliccd, when installed setuid root as part of the kdeedu… CVSS 2.0HIGH 10.0
- TI-2004-01022 Buffer overflow in the Gfx::doImage function in Gfx.cc for xpdf 3.00, and other products… CVSS 2.0HIGH 9.3
Sources
- CVE-2025-49091 · CVE Program
- CVE-2025-49091 · NVD
- FIRST EPSS
- GHSA-h4f3-5vvh-xjgj · GitHub Advisory Database · CC BY 4.0
- CVE-2025-49091 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences