CVE-2021-27804: libjxl_project libjxl Out-of-bounds Write
CVSS: 9.8v3.1CriticalModified
Published 02-03-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-27804 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in libjxl_project libjxl. EPSS estimates a 3.99% chance of exploitation in the next 30 days, higher than 90.4% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
3.99%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 02-03-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
JPEG XL (aka jpeg-xl) through 0.3.2 allows writable memory corruption.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
3.99%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
0.00 pp
From 3.99% on 19-09-2026
19-09-202619-10-2026
EPSS score3.99%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Libjxl_project1 product
- libjxl≤ 0.3.2
1 vendor · 1 product
References
4 links- packetstormsecurity.com/files/161623/jpeg-xl-0.3.1-Memory-Corruption.htmlX Refsource MISCThird Party Advisory