CVE-2021-40826

Name: CVE-2021-40826
Creator: NVD / NIST
Published: 2021-12-15T07:15:07.183+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.18%

Last modified Jun 17, 2026

CVE-2021-40826 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Clementine Music Player through 1.3.1 is vulnerable to a User Mode Write Access Violation, affecting the MP3 file parsing functionality at clementine+0x3aa207. The vulnerability is triggered when the user opens a crafted MP3 file or loads a remote stream URL that is mishandled by Clementine. EPSS estimates a 1.18% chance of exploitation in the next 30 days.

Description

Clementine Music Player through 1.3.1 is vulnerable to a User Mode Write Access Violation, affecting the MP3 file parsing functionality at clementine+0x3aa207. The vulnerability is triggered when the user opens a crafted MP3 file or loads a remote stream URL that is mishandled by Clementine. Attackers could exploit this issue to cause a crash (DoS) of the clementine.exe process or achieve arbitrary code execution in the context of the current logged-in Windows user.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.18%

63.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Clementine-Player	Clementine	<= 1.3.1

References

https://voidsec.com/advisories/cve-2021-40826/Exploit, Third Party Advisory
https://voidsec.com/advisories/cve-2021-40826/Exploit, Third Party Advisory

Timeline

Published: Dec 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40826?

How severe is CVE-2021-40826?

CVE-2021-40826 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.18% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40826?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40826?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST