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Response snapshot Nov 3, 2026, 19:21 UTC

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VulnerabilityCVE-2026-56367

ImageMagick: Integer Overflow in PSB (PSD v2) RLE decoding path causes heap Out of Bounds reads for 32-bit builds

An integer overflow in the PSB (PSD v2) RLE decoding path causes a heap out-of-bounds read on 32-bit builds. This can lead to information disclosure or a crash when processing crafted PSB files.

At a glance

Exploited
Not known
Severity
3.7 Low (CVSS 3.1)
Chance of exploitation
Not estimated
Sources
1 source

What to do

GitHub lists first patched versions: Magick.NET-Q16-AnyCPU: 14.10.3; Magick.NET-Q16-HDRI-AnyCPU: 14.10.3; Magick.NET-Q16-HDRI-OpenMP-arm64: 14.10.3; Magick.NET-Q16-HDRI-OpenMP-x64: 14.10.3; Magick.NET-Q16-HDRI-arm64: 14.10.3; Magick.NET-Q16-HDRI-x64: 14.10.3; Magick.NET-Q16-HDRI-x86: 14.10.3; Magick.NET-Q16-OpenMP-arm64: 14.10.3; Magick.NET-Q16-OpenMP-x64: 14.10.3; Magick.NET-Q16-OpenMP-x86: 14.10.3; Magick.NET-Q16-arm64: 14.10.3; Magick.NET-Q16-x64: 14.10.3; Magick.NET-Q16-x86: 14.10.3; Magick.NET-Q8-AnyCPU: 14.10.3; Magick.NET-Q8-OpenMP-arm64: 14.10.3; Magick.NET-Q8-OpenMP-x64: 14.10.3; Magick.NET-Q8-arm64: 14.10.3; Magick.NET-Q8-x64: 14.10.3; Magick.NET-Q8-x86: 14.10.3. Confirm the affected range and upgrade guidance in the exact advisory.

Read GitHub-reviewed advisory GHSA-273h-m46v-96q4 (opens a new tab)

What happened

An integer overflow in the PSB (PSD v2) RLE decoding path causes a heap out-of-bounds read on 32-bit builds. This can lead to information disclosure or a crash when processing crafted PSB files.

=================================================================
==3298==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xf512eb00 at pc 0xf76760b5 bp 0xffc1dfb8 sp 0xffc1dfa8
READ of size 8 at 0xf512eb00 thread T0
 #0 0xf76760b4 in ReadPSDChannelRLE coders/psd.c:1141

Affected package ranges reported by GitHub: Magick.NET-Q16-AnyCPU: < 14.10.3 Magick.NET-Q16-HDRI-AnyCPU: < 14.10.3 Magick.NET-Q16-HDRI-OpenMP-arm64: < 14.10.3 Magick.NET-Q16-HDRI-OpenMP-x64: < 14.10.3 Magick.NET-Q16-HDRI-arm64: < 14.10.3 Magick.NET-Q16-HDRI-x64: < 14.10.3 Magick.NET-Q16-HDRI-x86: < 14.10.3 Magick.NET-Q16-OpenMP-arm64: < 14.10.3 Magick.NET-Q16-OpenMP-x64: < 14.10.3 Magick.NET-Q16-OpenMP-x86: < 14.10.

3 Magick.NET-Q16-arm64: < 14.10.3 Magick.NET-Q16-x64: < 14.10.3 Magick.NET-Q16-x86: < 14.10.3 Magick.NET-Q8-AnyCPU: < 14.10.3 Magick.NET-Q8-OpenMP-arm64: < 14.10.3 Magick.NET-Q8-OpenMP-x64: < 14.10.3 Magick.NET-Q8-arm64: < 14.10.3 Magick.NET-Q8-x64: < 14.10.3 Magick.NET-Q8-x86: < 14.10.3

Scores and how they were measured

CVSS base severity

3.7

Version 3.1As of

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    GitHub-reviewed advisory GHSA-273h-m46v-96q4 (opens a new tab)

    The public advisory supplies the description, affected package/version ranges, and any listed CVSS metric. GitHub review is not local review.

    Published Checked

  2. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-273h-m46v-96q4, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, November 3). ImageMagick: Integer Overflow in PSB (PSD v2) RLE decoding path causes heap Out of Bounds reads for 32-bit builds (CVE-2026-56367). https://kevwire.com/record/CVE-2026-56367

MLA

"ImageMagick: Integer Overflow in PSB (PSD v2) RLE decoding path causes heap Out of Bounds reads for 32-bit builds (CVE-2026-56367)." KEVWire, 3 Nov. 2026, kevwire.com/record/CVE-2026-56367.

Chicago

KEVWire. "ImageMagick: Integer Overflow in PSB (PSD v2) RLE decoding path causes heap Out of Bounds reads for 32-bit builds (CVE-2026-56367)." Last modified November 3, 2026. https://kevwire.com/record/CVE-2026-56367.

Evidence summary (plain text)

ImageMagick: Integer Overflow in PSB (PSD v2) RLE decoding path causes heap Out of Bounds reads for 32-bit builds (Feb 25, 2026).
An integer overflow in the PSB (PSD v2) RLE decoding path causes a heap out-of-bounds read on 32-bit builds. This can lead to information disclosure or a crash when processing crafted PSB files.
CVSS 3.7 (version 3.1; evidence as of Nov 3, 2026; https://github.com/advisories/GHSA-273h-m46v-96q4).
Sources:
GitHub-reviewed advisory GHSA-273h-m46v-96q4: https://github.com/advisories/GHSA-273h-m46v-96q4
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc
Record ID: CVE-2026-56367.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Nov 3, 2026, 19:00 UTC. Ingestion is not an independent editorial investigation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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