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CVE-2021-45928

20
FAUCET Score

CVE-2021-45928 describes an out-of-bounds write vulnerability in libjxl (specifically version b02d6b9), which also impacts products like libvips versions 8.11 through 8.11.2. This medium-severity flaw (CVSS 5.5) could lead to a denial of service (availability impact) if a local attacker provides specially crafted input, though it does not affect confidentiality or integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.6.1CPE matchmatch criteria
cpe:2.3:a:libjxl_project:libjxl:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
32.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 87th percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

bugs.chromium.org / p/oss-fuzz/issues/detail
ExploitIssue TrackingThird Party Advisory
github.com / google/oss-fuzz-vulns/blob/main/vulns/libvips/OSV-2021-1055.yaml
ExploitThird Party Advisory
github.com / libjxl/libjxl/compare/v0.5...v0.6
PatchThird Party Advisory
github.com / libjxl/libjxl/issues/360
Issue TrackingPatchThird Party Advisory
github.com / libjxl/libjxl/pull/365
PatchThird Party Advisory