An issue was discovered in Thunar before 4.16.7 and 4.17.x before 4.17.2.
Priority MEDIUM 48CWE-913Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
An issue was discovered in Thunar before 4.16.7 and 4.17.x before 4.17.2. When called with a regular file as a command-line argument, it delegates to a different program (based on the file type) without user confirmation. This could be used to achieve code execution.
Why it matters now
EPSS 0.03076 87th 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
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-32563
- 2026-10-03 Alias added: GHSA-27fg-773w-qwfr
References
Patch 3
Advisory 4
- https://www.openwall.com/lists/oss-security/2021/05/09/2
- [oss-security] 20210511 Re: Code execution through Thunar
- [oss-security] 20230104 Code execution through MIME-type association of Mono interpreter and security expectations of MIME type associations
- [oss-security] 20230105 Re: Code execution through MIME-type association of Mono interpreter and security expectations of MIME type associations
More Xfce Thunar vulnerabilities
- TI-2011-01407 Thunar before 1.3.1 could crash when copy and pasting a file name with % format characters due to a format string error. CVSS 3.1HIGH 7.8
- TI-2018-13014 Xfce Thunar 1.6.15, when Xfce 4.12 is used, mishandles the IBus-Unikey input method for… CVSS 3.0MEDIUM 4.7
Sources
- CVE-2021-32563 · CVE Program
- CVE-2021-32563 · NVD
- FIRST EPSS
- GHSA-27fg-773w-qwfr · GitHub Advisory Database · CC BY 4.0
- CVE-2021-32563 · 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