An issue was discovered in SDDM through 0.17.0.
Priority LOW 35CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-287.
Summary
An issue was discovered in SDDM through 0.17.0. If configured with ReuseSession=true, the password is not checked for users with an already existing session. Any user with access to the system D-Bus can therefore unlock any graphical session. This is related to daemon/Display.cpp and helper/backend/PamBackend.cpp.
Why it matters now
EPSS 0.01177 67th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sddm_project:sddm:*:*:*:*:*:*:*:* | up to 0.17.0 | Vulnerable | Sddm Project |
- cpe:2.3:a:sddm_project:sddm:*:*:*:*:*:*:*:* Versions up to 0.17.0 Vulnerable ·Sddm Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2018-14345
- 2026-10-03 Alias added: GHSA-4wvx-qq9g-8hh9
References
More Sddm Project Sddm vulnerabilities
- TI-2014-06057 Simple Desktop Display Manager (SDDM) before 0.10.0 allows local users to gain root… CVSS 3.0HIGH 7.8
- TI-2014-06056 Simple Desktop Display Manager (SDDM) before 0.10.0 allows local users to log in as user "sddm" without authentication. CVSS 3.0HIGH 7.8
- TI-2020-17074 An issue was discovered in SDDM before 0.19.0. CVSS 3.1MEDIUM 6.3
- TI-2015-00797 daemon/Greeter.cpp in sddm before 0.13.0 does not properly disable the KDE crash handler… CVSS 2.0MEDIUM 4.6
Sources
- CVE-2018-14345 · CVE Program
- CVE-2018-14345 · NVD
- FIRST EPSS
- GHSA-4wvx-qq9g-8hh9 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-14345 · 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