Artifex Ghostscript Pdfwrite gdevpsfx.c type1_callsubr stack-based overflow (CVE-2026-103226) | HOL Guard CVE

Medium · CVSS 5.3CVE-2026-103226

Artifex Ghostscript Pdfwrite gdevpsfx.c type1_callsubr stack-based overflow

Answer in brief

CVE-2026-103226 records a Medium severity (CVSS 5.3) vulnerability in Artifex Ghostscript Pdfwrite gdevpsfx.c type1_callsubr stack-based overflow. The current sources do not mark it as known exploited. The current feed maps Artifex/Ghostscript (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 30, 2026Updated Sep 30, 2026Source checked Sep 30, 2026First seen by HOL Sep 30, 2026Material review Sep 30, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Artifex/Ghostscript (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Artifex/Ghostscriptgeneric	10.09	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Artifex/Ghostscript.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 30, 2026

Sources and claim methodology

Upstream source description

A vulnerability was identified in Artifex Ghostscript up to 10.09.0. Affected is the function type1_callsubr of the file devices/vector/gdevpsfx.c of the component Pdfwrite. The manipulation leads to stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. It is suggested to install a patch to address this issue. A solution was implemented: "I've chosen to fix this slightly differently by using the defined macro in the font parsing loop rather than in the callsubr function, because this better matches the pattern of 'normal' usage."

Quoted source text, attributed separately from HOL analysis.