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CVE-2021-32563

An issue was discovered in Thunar before 4.16.7 and 4.17.x before 4.17.2. When called with a...

9.8 CriticalFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

3.08%Up 0.9 points since May 11, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

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.

Record
CVE-2021-32563
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-913
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2021-32563
Updated
2026-11-02
EUVDEUVD-2021-19405 No score

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.

Record
EUVD-2021-19405
Updated
2026-11-03
GitHub AdvisoriesGHSA-27fg-773w-qwfr 9.8

An issue was discovered in Thunar before 4.16.7 and 4.17.x before 4.17.2. When called with a...

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.

Record
GHSA-27fg-773w-qwfr
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-913
Updated
2026-11-02
OSV 9.8

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.

Record
CVE-2021-32563
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-32563 9.8

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.

Record
DEBIAN-CVE-2021-32563
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2021-1298 9.8

Thunar security update

Thunar is a modern file manager for the Unix/Linux desktop, aiming to be easy-to-use and fast.

Security Fix(es):

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.(CVE-2021-32563)

Record
OESA-2021-1298
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2021-32563 9.8

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.

Record
UBUNTU-CVE-2021-32563
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2021-0306 No score

Updated thunar packages fix a security vulnerability

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 (CVE-2021-32563).

Record
MGASA-2021-0306
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
thunar
Debian:12
 before 4.16.8-1
4.16.8-1
thunar
Debian:13
 before 4.16.8-1
4.16.8-1
thunar
Debian:14
 before 4.16.8-1
4.16.8-1
thunar
Mageia:8
 before 4.16.8-1.mga8
4.16.8-1.mga8
Thunar
openEuler:20.03-LTS-SP2
 before 1.8.15-3.oe1
1.8.15-3.oe1
thunar
Ubuntu:16.04:LTS
 All versions, plus listed versions
1.6.10-11.6.10-21.6.10-2ubuntu11.6.11-0ubuntu0.16.04.11.6.11-0ubuntu0.16.04.2
 None known
thunar
Ubuntu:18.04:LTS
 All versions, plus listed versions
1.6.12-11.6.13-11.6.13-21.6.14-11.6.14-1ubuntu11.6.15-0ubuntu11.6.15-0ubuntu1.18.04.1
 None known
thunar
Ubuntu:20.04:LTS
 All versions, plus listed versions
1.8.9-11.8.11-11.8.12-11.8.14-0ubuntu1
 None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-32563 is a critical vulnerability (CVSS 9.8) in Xfce Thunar, published May 11, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.08%, the 87th percentile. Fixed in thunar 4.16.8-1.

References

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