CVE-2023-39329 | Openjpeg: resource exhaustion will occur in the opj_t1_decode_cblks function in the tcd.c

A flaw was found in OpenJPEG. A resource exhaustion can occur in the opj_t1_decode_cblks function in tcd.c through a crafted image file, causing a denial of service.

Published: 2024-07-13 Last update: 2026-03-09 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-39329 is rated Low Risk (36.4/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.11%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-39329

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-16 0.16% 0.11% -0.05%
2 2025-12-30 0.12% 0.16% +0.04%
3 2025-11-21 — 0.12% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-39329

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2023-39329

OS Trackers for CVE-2023-39329

vendor priority summary link
debian not yet assigned CVE-2023-39329 not yet assigned priority: Debian including 1 source packages (openjpeg2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2023-39329
redhat medium — https://access.redhat.com/security/cve/CVE-2023-39329
suse medium CVE-2023-39329 severity moderate: SUSE including 5 source package names (libopenjpeg1, libopenjpeg1-32bit, openjpeg, openjpeg-devel, openjpeg-devel-32bit), 70 product×package rows across 22 product lines (SUSE Enterprise Storage 7.1, SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS, … (22 product lines)): Known Not Affected 70. https://www.suse.com/security/cve/CVE-2023-39329/
ubuntu medium CVE-2023-39329 medium priority: Ubuntu including 7 source packages (blender, ghostscript, …), 69 status rows across 11 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 32, DNE 12, ignored 12, not-affected 7, deferred 6. https://ubuntu.com/security/CVE-2023-39329

Affected software / configurations for CVE-2023-39329

Vendor Product Version Raw CPE
uclouvain openjpeg 2.0 cpe:2.3:a:uclouvain:openjpeg:2.0:*:*:*:*:*:*:*
uclouvain openjpeg — cpe:2.3:a:uclouvain:openjpeg:-:*:*:*:*:*:*:*
uclouvain openjpeg 2.5.0 cpe:2.3:a:uclouvain:openjpeg:2.5.0:*:*:*:*:*:*:*

References for CVE-2023-39329

cvelogic Threat Intelligence