What’s Vulnerable › Vulnerabilities

CVE-2021-32563

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-11 · updated 2026-06-17
• Weakness: CWE-913

Description

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.

Affected products

• Xfce Thunar: before 4.16.7; from 4.17.0 before 4.17.2 — fixed in 4.16.7, 4.17.2

How to fix

Upgrade to a fixed version: Xfce Thunar 4.16.7, 4.17.2. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2021/05/11/3
• http://www.openwall.com/lists/oss-security/2023/01/05/1
• http://www.openwall.com/lists/oss-security/2023/01/05/2
• https://gitlab.xfce.org/xfce/thunar/-/commit/1b85b96ebf7cb9bf6a3ddf1acee7643643fdf92d
• https://gitlab.xfce.org/xfce/thunar/-/commit/3b54d9d7dbd7fd16235e2141c43a7f18718f5664
• https://gitlab.xfce.org/xfce/thunar/-/commit/9165a61f95e43cc0b5abf9b98eee2818a0191e0b
• https://gitlab.xfce.org/xfce/thunar/-/tags
• https://www.openwall.com/lists/oss-security/2021/05/09/2
• http://www.openwall.com/lists/oss-security/2021/05/11/3
• http://www.openwall.com/lists/oss-security/2023/01/05/1
• http://www.openwall.com/lists/oss-security/2023/01/05/2
• https://gitlab.xfce.org/xfce/thunar/-/commit/1b85b96ebf7cb9bf6a3ddf1acee7643643fdf92d

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