CVE-2025-50952
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedopenjpeg v 2.5.0 was discovered to contain a NULL pointer dereference via the component /openjp2/dwt.c.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceOpenJPEG 2.5.0 contains a NULL pointer dereference vulnerability in the DWT (Discrete Wavelet Transform) component located in /openjp2/dwt.c. This issue could be triggered when processing specially crafted JPEG2000 images, potentially leading to a denial of service or application crash.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 2.5.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify OpenJPEG installationRun 'opj_version' or check library files for openjp2 (e.g., libopenjp2.so.7 or similar) using 'ldd' on your application or 'dpkg -l | grep openjpeg' / 'rpm -qa | grep openjpeg'Affected if OpenJPEG version 2.5.0 is reported or installed
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Confirm library version directlyIf the command-line tool is unavailable, inspect the shared library file directly: 'strings /path/to/libopenjp2.so | grep -i version' or check the SONAME via 'readelf -d /path/to/libopenjp2.so'Affected if The library reports version 2.5.0 or the SONAME matches version 2.5.0
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Determine if JPEG2000 processing is activeReview application logs, code, or configuration to verify the software uses OpenJPEG to decode JPEG2000 images (.jp2, .j2k, .j2c files)Affected if The environment processes JPEG2000 images through OpenJPEG library calls
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Check for DWT code path usageVerify the application decodes JPEG2000 images that invoke the DWT (Discrete Wavelet Transform) routines in dwt.c - this is standard in JPEG2000 decoding but confirm the library is actively usedAffected if OpenJPEG is actively decoding JPEG2000 images, which invokes the DWT component
You are affected if OpenJPEG version 2.5.0 is installed AND your environment uses it to process JPEG2000 images, triggering the NULL pointer dereference in the DWT component.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply patches or updates released by the OpenJPEG project to address the NULL pointer dereference in the DWT component. Consider input validation and careful error handling around DWT operations as a defense-in-depth measure.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-50952 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-50952 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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