Artifex Ghostscript up to 10.09.0 Pdfwrite gdevpsfx.c type1_callsubr stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k2.52-

Summaryinfo

A vulnerability described as critical has been identified in Artifex Ghostscript up to 10.09.0. Affected by this vulnerability is the function type1_callsubr of the file devices/vector/gdevpsfx.c of the component Pdfwrite. The manipulation results in stack-based overflow. This vulnerability is identified as CVE-2026-103226. The attack can be executed remotely. Additionally, an exploit exists. A patch should be applied to remediate 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."

Detailsinfo

A vulnerability, which was classified as critical, was found 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 with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability.

The advisory is available at bugs.ghostscript.com. This vulnerability is traded as CVE-2026-103226. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details and a public exploit are known.

The exploit is shared for download at bugs.ghostscript.com. It is declared as proof-of-concept. 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."

Applying a patch is able to eliminate this problem.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/30/2026 Advisory disclosed
09/30/2026 +0 days VulDB entry created
09/30/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: artifex.com

Advisory: 709672
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-103226 (🔒)
GCVE (CVE): GCVE-0-2026-103226
GCVE (VulDB): GCVE-100-411906
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/30/2026 09:45
Changes: 09/30/2026 09:45 (60)
Complete: 🔍
Submitter: zzxzzb
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #955016: Artifex Software Ghostscript (GhostPDL) 8.00 (2002) up to 10.09.0 / master (2026-08-21) Stack-based Buffer Overflow (by zzxzzb)

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