CVE-2021-36409

Name: CVE-2021-36409
Creator: NVD / NIST
Published: 2022-01-10T23:15:09.047+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2021-36409 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. There is an Assertion `scaling_list_pred_matrix_id_delta==1' failed at sps.cc:925 in libde265 v1.0.8 when decoding file, which allows attackers to cause a Denial of Service (DoS) by running the application with a crafted file or possibly have unspecified other impact.. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

There is an Assertion `scaling_list_pred_matrix_id_delta==1' failed at sps.cc:925 in libde265 v1.0.8 when decoding file, which allows attackers to cause a Denial of Service (DoS) by running the application with a crafted file or possibly have unspecified other impact.

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

0.90%

55.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-617

Affected Software

Vendor	Product	Versions
Struktur	Libde265	1.0.8
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

https://github.com/strukturag/libde265/issues/300Exploit, Issue Tracking
https://lists.debian.org/debian-lts-announce/2022/12/msg00027.htmlIssue Tracking, Mailing List
https://www.debian.org/security/2023/dsa-5346Issue Tracking
https://github.com/strukturag/libde265/issues/300Exploit, Issue Tracking
https://lists.debian.org/debian-lts-announce/2022/12/msg00027.htmlIssue Tracking, Mailing List
https://www.debian.org/security/2023/dsa-5346Issue Tracking

Timeline

Published: Jan 10, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-36409?

How severe is CVE-2021-36409?

CVE-2021-36409 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2021-36409?

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-2021-36409?

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

Scan your code now

Source: NVD / NIST