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CVE-2021-29338

20
FAUCET Score

CVE-2021-29338 describes an integer overflow vulnerability in OpenJPEG v2.4.0, affecting various Debian and Fedora distributions. An attacker can trigger a Denial of Service (DoS) by providing a directory containing 1,048,576 files via the "-ImgDir" command line option. This medium-severity vulnerability has a CVSS score of 5.5, indicating a local attack vector with low complexity, requiring user interaction to achieve high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.4.0CPE matchmatch criteria
cpe:2.3:a:uclouvain:openjpeg:2.4.0:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
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
1.56%
Probability of exploitation in next 30 days
EPSS Percentile
72.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0156 is in the 83rd percentile among its peer group of 5,765 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 (8)

9001patch availablevia llm_extracted
View patch
gatsbyjspatch availablevia llm_extracted
View patch
github_advisorypatch availablevia nvd_reference
View patch
joinmastodonpatch availablevia llm_extracted
View patch
mariadbpatch availablevia llm_extracted
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: openjpeg2-0:2.4.0-4.el8
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: inkscape:flatpak/openjpeg2
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: gimp:flatpak/openjpeg2

Vendor Advisories (5)

gatsbyjsllm-gatsbyjs-d2a2db116f1afcf5CRITICAL

HP ThinPro 8.1 SP6 Security Updates

Mar 3, 2025
9001llm-9001-fecf0327d92708b9CRITICAL

HP ThinPro 8.1 SP6 Security Updates

Mar 3, 2025
joinmastodonllm-joinmastodon-9b2d3b3c900c6299CRITICAL

HP ThinPro 8.1 SP6 Security Updates

Mar 3, 2025
mariadbllm-mariadb-7e20cc2309665f3eCRITICAL

HP ThinPro 8.1 SP6 Security Updates

Mar 3, 2025
redhatCVE-2021-29338Low

openjpeg: out-of-bounds write due to an integer overflow in opj_compress.c

Mar 24, 2021

References

lists.debian.org / debian-lts-announce/2025/04/msg00002.html
github.com / uclouvain/openjpeg/issues/1338
ExploitIssue TrackingPatchThird Party Advisory
lists.debian.org / debian-lts-announce/2022/04/msg00006.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/EZ54FGM2IGAP4AWSJ22JKHOPHCR3FGYU
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/QB6AI7CWXWMEDZIQY4LQ6DMIEXMDOHUP
security.gentoo.org / glsa/202209-04
Third Party Advisory