CVE-2025-50952Public exploit

Decoder crash via null pointer arithmetic

Published Aug 7, 2025 · Updated Dec 29, 2025

A NULL pointer dereference in OpenJPEG 2.5.0 allows context-dependent attackers to crash the decoder via a crafted JPEG 2000 image. The opj_dwt_decode_tile function in src/lib/openjp2/dwt.c performs zero-offset pointer arithmetic on a null pointer during tile wavelet decoding. An application must process the crafted image through the affected decoding path; successful triggering interrupts decoding and any dependent service.

CVSS severity6.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A NULL pointer dereference in OpenJPEG 2.5.0 allows context-dependent attackers to crash the decoder via a crafted JPEG 2000 image. The opj_dwt_decode_tile function in src/lib/openjp2/dwt.c performs zero-offset pointer arithmetic on a null pointer during tile wavelet decoding. An application must process the crafted image through the affected decoding path; successful triggering interrupts decoding and any dependent service.

The record

CVE
CVE-2025-50952
Published
Aug 7, 2025
Updated
Dec 29, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference

Public exploit references

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Technologies

Your stack

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Your stack

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