What is the CVSS score of CVE-2025-54874?

CVE-2025-54874 has a contested CVSS base score of 6.6 from a third party (e.g. CISA-ADP), while the vendor rates it Medium. vuln.today uses the vendor rating as authoritative.

Is there a public PoC exploit available for CVE-2025-54874?

Yes, a public proof-of-concept exploit is available for CVE-2025-54874. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-54874?

Within 7 days: Identify affected systems running OpenJPEG from 2.5.1 and apply vendor patches promptly. Vendor patch is available.

Openjpeg CVE-2025-54874

MEDIUM

Use of Uninitialized Variable (CWE-457)

2025-08-05 security-advisories@github.com

Information Disclosure Red Hat Suse Openjpeg Uclouvain

Medium

Disputed · 6.6 NVD

View

Vulnerability Assessment

Weakness	CWE CWE-457 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Variable initialization checks
Impact	CVSS score of 6.6 (MEDIUM). Attack characteristics: local attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.07%.
Exploit ScenarioDerived	Successful exploitation could compromise the medium-severity affected system.

This Week Schedule remediation this week. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

OpenJPEG is an open-source JPEG 2000 codec. Rated medium severity (CVSS 6.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-457. 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. Affected products include: Uclouvain Openjpeg. Version information: through 2.5.3.

Severity by source

Sources disagree (Medium–Critical)

GitHub Advisory PRIMARY 6.6 MEDIUM

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

SUSE 9.8 CRITICAL

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

Red Hat 8.0 HIGH

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorGitHub Advisory

Attack Vector

Local

Attack Complexity

Low

Attack Requirements

Present

Privileges Required

None

User Interaction

None

Vulnerable system: Confidentiality

High

Vulnerable system: Integrity

High

Vulnerable system: Availability

High

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

Lifecycle Timeline

Patch released

Mar 28, 2026 - 19:05 nvd

Patch available

PoC Detected

Sep 26, 2025 - 22:15 vuln.today

Public exploit code

CVE Published

Aug 05, 2025 - 15:15 nvd

MEDIUM 6.6

DescriptionGitHub Advisory

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.

Executive ViewAI

Why It Matters

Organizations using OpenJPEG from 2.5.1 should be aware of notable risk from CVE-2025-54874 rated CVSS 6.6. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available. A patch is available and should be applied during regular vulnerability management.

Business Impact: Moderate

Compensating Controls

Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.

Threat Intelligence Overview

EPSS Score

0.1%

Top 78% exploitable

Exploit

POC

Public exploit code exists

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC Yes

EPSS 0.1%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

Exploitation· derived

Poc

System Exposure· derived

Small

Automatable· derived

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +33

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)GitHub Advisory

cpe:2.3:a:uclouvain:openjpeg:*:*:*:*:*:*:*:*

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Same weakness CWE-457 – Use of Uninitialized Variable

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Vendor StatusVendor

SUSE

Severity: Critical

Product	Status
SUSE Package Hub 15 SP6	Fixed
openSUSE Leap 15.6	Fixed
openSUSE Tumbleweed	Fixed
SUSE Linux Enterprise Desktop 15 SP7	Fixed
SUSE Linux Enterprise Desktop 15 SP7	Fixed

References

Advisories & patches

PATCH https://github.com/uclouvain/openjpeg/commit/f809b80c67717c152a5ad30bf06774f00da4fd2d ADVISORY https://access.redhat.com/errata/RHSA-2025:13944 REF https://github.com/uclouvain/openjpeg/pull/1573

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