CVE-2026-103226: Artifex Ghostscript stack-based buffer overflow in Pdfwrite

CVE-2026-103226 · Severity: medium · CVSS 6.3 · Published 2026-09-30

Ghostscript is widely used document processing software that converts and renders PDF and PostScript files. A stack-based buffer overflow vulnerability in its Pdfwrite component allows remote attackers to execute code by sending specially crafted PDF files. The exploit code is already publicly available, increasing the risk of active exploitation.

Technologies: Artifex Ghostscript. Vendors: Artifex.

Quick answers

Is CVE-2026-103226 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-103226 being exploited in the wild.
How severe is CVE-2026-103226?
Medium severity, with a CVSS score of 6.3, published 30 September 2026.
Which products and versions are affected?
Artifex Ghostscript up to 10.09.0.
Is there a fix for CVE-2026-103226?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-103226 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-103226?
Check whether you run Artifex Ghostscript at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow exists in the type1_callsubr function within devices/vector/gdevpsfx.c of the Pdfwrite component. The vulnerability can be exploited remotely without authentication by providing malicious input during PDF processing. A patch has been released that uses a macro-based approach in the font parsing loop to prevent the overflow.

Affected products

  • Artifex Ghostscript up to 10.09.0

Timeline

  • 2026-09-30: disclosed

References

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