CVE-2025-54874: OpenJPEG is an open-source JPEG 2000 codec

Q: How do I fix CVE-2025-54874?

openjpeg: upgrade to newer than 2.5.3. Exact commands for each OS are on this page.

Q: Is CVE-2025-54874 being exploited?

CVE-2025-54874 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-54874 affect?

CVE-2025-54874 affects openjpeg. Severity is critical (CVSS 9.8). OpenJPEG is an open-source JPEG 2000 codec. In OpenJPEG from 2.5.1 through 2.5.3, a call to opj_jp2_read_header may lead to OOB heap memory write when the data stream p_stream is too short and p_image is not initialized.

Q: How urgent is CVE-2025-54874?

Priority 57/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2025-54874 is a critical-severity flaw (CVSS 9.8) affecting openjpeg. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenJPEG is an open-source JPEG 2000 codec. In OpenJPEG from 2.5.1 through 2.5.3, a call to opj_jp2_read_header may lead to OOB heap memory write when the data stream p_stream is too short and p_image is not initialized.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-457
Published	2025-08-05
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: uclouvain

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-05 15:15 UTCPublished CVE record published
2026-06-17 09:40 UTCUpdated Record last modified

uclouvain openjpeg UPGRADE

Affected: <= 2.5.3

Fixed in: newer than 2.5.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openjpeg || rpm -q openjpeg || openjpeg --version

2. UPGRADE to newer than 2.5.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openjpeg

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openjpeg

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-54874?

openjpeg: upgrade to newer than 2.5.3. Exact commands for each OS are on this page.

Is CVE-2025-54874 being exploited?

CVE-2025-54874 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-54874 affect?

CVE-2025-54874 affects openjpeg. Severity is critical (CVSS 9.8). OpenJPEG is an open-source JPEG 2000 codec. In OpenJPEG from 2.5.1 through 2.5.3, a call to opj_jp2_read_header may lead to OOB heap memory write when the data stream p_stream is too short and p_image is not initialized.

How urgent is CVE-2025-54874?

Priority 57/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-39329 MEDIUM 6.5 DOWNGRADE A flaw was found in OpenJPEG
CVE-2023-39327 MEDIUM 4.3 DOWNGRADE A flaw was found in OpenJPEG
CVE-2023-39328 MEDIUM 5.5 DOWNGRADE A vulnerability was found in OpenJPEG similar to CVE-2019-6988
CVE-2025-50952 MEDIUM 6.5 DOWNGRADE openjpeg v 2.5.0 was discovered to contain a NULL pointer dereference via the component /openjp2/dwt.c.

References

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