NVD / CVE Program· CNA redhat

CVE-2023-39327: Openjpeg: malicious files can cause the program to enter a large loop

Noroxi assessment

Priority: Monitor (action score 17/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.55% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
Fixed version: openjpeg (openSUSE:Leap 15.6) 1.5.2-150000.4.15.1; openjpeg2 (openSUSE:Leap 15.6) 2.3.0-150000.3.24.1; openjpeg2 (openSUSE:Leap 16.0) 2.5.3-160000.3.1.

Low priority for now. Upgrade to openjpeg (openSUSE:Leap 15.6) 1.5.2-150000.4.15.1; openjpeg2 (openSUSE:Leap 15.6) 2.3.0-150000.3.24.1; openjpeg2 (openSUSE:Leap 16.0) 2.5.3-160000.3.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in OpenJPEG. Maliciously constructed pictures can cause the program to enter a large loop and continuously print warning messages on the terminal.

MediumCVSS 4.3 · v3.1—No exploit Fix available

Published: Jul 13, 2024
Updated: Nov 7, 2026
EPSS: 0.5% · 46th percentile
CWE: CWE-400

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 17 / 40 · 4.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.5%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · redhat: 4.3; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
uclouvain	openjpeg	cpe:2.3:a:uclouvain:openjpeg
redhat	enterprise linux	cpe:2.3:o:redhat:enterprise_linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

uclouvain openjpegall versions
uclouvain openjpeg2.0
uclouvain openjpeg2.5.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

Red Hat Red Hat AI Inference Server 3.2
- 1772713830 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 6
- all versionsunknown
Red Hat Red Hat Enterprise Linux 7
- all versionsunknown
- all versionsunknown
Red Hat Red Hat Enterprise Linux 8
- all versionsaffected
- all versionsaffected
- all versionsaffected
- all versionsaffected
Red Hat Red Hat Enterprise Linux 9
- all versionsaffected
www.openjpeg.org/ openjpeg
- 2.5.0affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	openjpeg2	from 0	—
openSUSE:Leap 15.6	openjpeg	before 1.5.2-150000.4.15.1	1.5.2-150000.4.15.1
openSUSE:Leap 15.6	openjpeg2	before 2.3.0-150000.3.24.1	2.3.0-150000.3.24.1
openSUSE:Leap 16.0	openjpeg2	before 2.5.3-160000.3.1	2.5.3-160000.3.1
openSUSE:Tumbleweed	openjpeg2	before 2.5.4-2.1	2.5.4-2.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7	openjpeg2	before 2.3.0-150000.3.24.1	2.3.0-150000.3.24.1
SUSE:Linux Enterprise Module for Desktop Applications 15 SP6	openjpeg	before 1.5.2-150000.4.15.1	1.5.2-150000.4.15.1
SUSE:Linux Enterprise Server 16.0	openjpeg2	before 2.5.3-160000.3.1	2.5.3-160000.3.1
SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5	openjpeg2	before 2.1.0-4.27.1	2.1.0-4.27.1

Same product

uclouvain: all records

Other highest-scoring records for the same primary product.

CVE-2012-3358Multiple heap-based buffer overflows in the j2k_read_sot function in j2k.c in OpenJPEG 1.5 allow remote attackers to cause a denial of…
42Plan
CVE-2017-17480In OpenJPEG 2.3.0, a stack-based buffer overflow was discovered in the pgxtovolume function in jp3d/convert.c.
41Plan
CVE-2013-4290Stack-based buffer overflow in OpenJPEG before 1.5.2 allows remote attackers to have unspecified impact via unknown vectors to (1)…
41Plan

Published before and after this one in the same product

← EarlierCVE-2022-1122Mar 29, 2022 · A flaw was found in the opj2_decompress program in openjpeg2 2.4.0 in the way it handles an input directory with a large number of files.
22Monitor
← EarlierCVE-2023-39328Jul 9, 2024 · Openjpeg: denail of service via crafted image file
22Monitor
Later →CVE-2023-39329Jul 13, 2024 · Openjpeg: resource exhaustion will occur in the opj_t1_decode_cblks function in the tcd.c
26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
opensuse:openjpeg	1.5.2-150000.4.15.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:openjpeg2	2.3.0-150000.3.24.1 · openSUSE:Leap 15.6	Package registry (OSV)
suse:openjpeg	1.5.2-150000.4.15.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 SP6	Package registry (OSV)
suse:openjpeg2	2.1.0-4.27.1 · SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5	Package registry (OSV)
suse:openjpeg2	2.3.0-150000.3.24.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2023-393290 days apartOpenjpeg: resource exhaustion will occur in the opj_t1_decode_cblks function in the tcd.c
26Monitor
CVE-2023-393284 days apartOpenjpeg: denail of service via crafted image file
22Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
A user must open a link or visit a page.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: low · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: Low

Weakness class (CWE)

CWE-400 · Uncontrolled Resource Consumption

CVSS vector

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

nvd-secondary

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

The bug in code

The whole CWE-400 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1function expand(node) {
2  return node.children.map(expand);
3}

Fixed

1const MAX_DEPTH = 32;
2function expand(node, depth = 0) {
3  if (depth > MAX_DEPTH) throw new Error("too deep");
4  return node.children.map((c) => expand(c, depth + 1));
5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Endpoint Denial of ServiceT1499

Change log

Fix✗ → ✓Sep 28, 2026, 10:46 PM UTC

For records you follow, these changes also arrive as notifications. →

References

access.redhat.com/errata/RHSA-2026:4128

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records