CVE-2026-39919Hinoki check available

Code execution via undersized JPEG 2000 row buffer

Published Sep 15, 2026 · Updated Sep 15, 2026

Heap-based buffer overflow in Ghostscript before 10.08.0 allows attackers to execute code through a crafted PDF containing a JPEG 2000 image. The base/sjpx_openjpeg.c non-samescale path sizes its row buffer for packed sub-byte output, then emits one full byte per output column. Processing components with different subsampling factors can overwrite heap allocator metadata and transfer control in the Ghostscript process.

CVSS severityUnavailable
Unscored
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Heap-based buffer overflow in Ghostscript before 10.08.0 allows attackers to execute code through a crafted PDF containing a JPEG 2000 image. The base/sjpx_openjpeg.c non-samescale path sizes its row buffer for packed sub-byte output, then emits one full byte per output column. Processing components with different subsampling factors can overwrite heap allocator metadata and transfer control in the Ghostscript process.

The record

CVE
CVE-2026-39919
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Artifex Software, Inc.
Product
Ghostscript
Classifications
T1203
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <10.08.0

What conditions does exploitation require?

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

What is affected?

Artifex Software, Inc. · Ghostscriptversion=0 <10.08.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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 exploitUnconfirmed

Weakness, pattern, technique

T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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