CVE-2021-28026

Name: CVE-2021-28026
Creator: NVD / NIST
Published: 2021-03-05T14:15:13.687+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.17%

Last modified Jun 17, 2026

CVE-2021-28026 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. jpeg-xl v0.3.2 is affected by a heap buffer overflow in /lib/jxl/coeff_order.cc ReadPermutation. When decoding a malicous jxl file using djxl, an attacker can trigger arbitrary code execution or a denial of service.. EPSS estimates a 1.17% chance of exploitation in the next 30 days.

Description

jpeg-xl v0.3.2 is affected by a heap buffer overflow in /lib/jxl/coeff_order.cc ReadPermutation. When decoding a malicous jxl file using djxl, an attacker can trigger arbitrary code execution or a denial of service.

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

1.17%

63.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Jpeg	Jpeg-Xl	0.3.2

References

https://gitlab.com/wg1/jpeg-xl/-/issues/163Exploit, Issue Tracking, Third Party Advisory
https://gitlab.com/wg1/jpeg-xl/-/issues/163Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Mar 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-28026?

How severe is CVE-2021-28026?

CVE-2021-28026 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.17% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28026?

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-2021-28026?

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

Scan your code now

Source: NVD / NIST