CVE-2021-28026 describes a heap buffer overflow vulnerability in jpeg-xl v0.3.2, specifically within the ReadPermutation function in /lib/jxl/coeff_order.cc. This flaw allows an attacker to achieve arbitrary code execution or a denial of service by crafting and providing a malicious JXL file to the djxl decoder. Rated 7.8 HIGH (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), it requires user interaction (UI:R) and local access (AV:L) but can lead to high confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog, though it has received minimal community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
0.3.2CPE matchmatch criteria | cpe:2.3:a:jpeg:jpeg-xl:0.3.2:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.