HOMEVULNERABILITIESCVE-2021-32563
CRITICAL

CVE-2021-32563

CWE-913Published: May 11, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-32563 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

xfce1 product(s)
thunar
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

All References (16)

→
http://www.openwall.com/lists/oss-security/2021/05/11/3Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2023/01/05/1Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2023/01/05/2Mailing List · Third Party Advisory
→
https://gitlab.xfce.org/xfce/thunar/-/commit/1b85b96ebf7cb9bf6a3ddf1acee7643643fdf92dPatch
→
https://gitlab.xfce.org/xfce/thunar/-/commit/3b54d9d7dbd7fd16235e2141c43a7f18718f5664Patch
→
https://gitlab.xfce.org/xfce/thunar/-/commit/9165a61f95e43cc0b5abf9b98eee2818a0191e0bPatch
→
https://gitlab.xfce.org/xfce/thunar/-/tagsRelease Notes
→
https://www.openwall.com/lists/oss-security/2021/05/09/2Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2021/05/11/3Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2023/01/05/1Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2023/01/05/2Mailing List · Third Party Advisory
→
https://gitlab.xfce.org/xfce/thunar/-/commit/1b85b96ebf7cb9bf6a3ddf1acee7643643fdf92dPatch
→
https://gitlab.xfce.org/xfce/thunar/-/commit/3b54d9d7dbd7fd16235e2141c43a7f18718f5664Patch
→
https://gitlab.xfce.org/xfce/thunar/-/commit/9165a61f95e43cc0b5abf9b98eee2818a0191e0bPatch
→
https://gitlab.xfce.org/xfce/thunar/-/tagsRelease Notes

Quick Facts

CVE IDCVE-2021-32563
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-913
CISA KEVNo
Affected1 vendor(s)
PublishedMay 11, 2021

Related CVEs (CWE-913)

CVE-2022-36067
10.0
CVE-2023-29199
10.0
CVE-2026-47137
10.0
CVE-2026-47208
10.0
CVE-2026-47131
10.0
CVE-2025-46673
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-32563 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2021-32563·NVD