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MEDIUM

CVE-2026-103226

Artifex Ghostscript Pdfwrite gdevpsfx.c type1_callsubr stack-based overflow

CVSS v3

6.3

MEDIUM

EPSS Score

0.5 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

none

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • ghostscriptAlmaLinux:10all versions · fixed in 10.02.1-16.el10_2.3and 6 other packages
  • ghostscriptAlmaLinux:9all versions · fixed in 9.54.0-19.el9_8.3and 7 other packages
  • ghostscriptAlmaLinux:8all versions · fixed in 9.27-19.el8_10and 7 other packages

Vendor advisories

  • CVE-2026-103226 Red Hat Product Security16 products fixed · 13 known affected

    ghostscript: ghostscript: stack-based buffer overflow in pdfwrite via crafted font data

    ghostscript as a component of Red Hat Enterprise Linux 6 · ghostscript-devel as a component of Red Hat Enterprise Linux 6 · ghostscript-doc as a component of Red Hat Enterprise Linux 6

  • RHSA-2026:83553 Red Hat Product Security6 products fixed

    Red Hat Security Advisory: ghostscript security update

  • RHSA-2026:83551 Red Hat Product Security5 products fixed

    Red Hat Security Advisory: ghostscript security update

  • RHSA-2026:83552 Red Hat Product Security5 products fixed

    Red Hat Security Advisory: ghostscript security update

Full record on NVD

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."

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Published
2026-09-30
Last Modified
2026-09-30

Frequently asked questions

What is CVE-2026-103226?

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."

Is CVE-2026-103226 actively exploited?

Active exploitation of CVE-2026-103226 has not been confirmed. Its EPSS score was 0.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-103226?

CVE-2026-103226 has a CVSS v3 base score of 6.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.

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