CVE-2026-103226: Stack-based Buffer Overflow in Artifex Ghostscript
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."
AI Analysis
Technical Summary
This vulnerability in Artifex Ghostscript up to version 10.09 involves a stack-based buffer overflow in the type1_callsubr function within the Pdfwrite component. The flaw arises from improper handling in the font parsing logic, which can be triggered remotely. The vendor fixed the issue by modifying the macro usage in the font parsing loop to better align with normal usage patterns, mitigating the overflow risk. The CVSS 4.0 score is 5.3, indicating medium severity with network attack vector and no privileges required.
Potential Impact
Successful exploitation could lead to a stack-based buffer overflow, potentially allowing remote attackers to execute arbitrary code or cause a denial of service. The vulnerability is remotely exploitable without authentication. However, the impact is rated medium due to limited complexity and partial impact on confidentiality, integrity, and availability.
Mitigation Recommendations
A patch has been implemented by the vendor to fix this vulnerability. It is recommended to update Artifex Ghostscript to the fixed version beyond 10.09 or apply the vendor's patch as soon as possible to mitigate this issue.
CVE-2026-103226: Stack-based Buffer Overflow in Artifex Ghostscript
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."
CVSS v4.0
Score 5.3medium
Affected software
Artifex
Ghostscript
cpe:2.3:a:artifex:ghostscript:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Artifex Ghostscript up to version 10.09 involves a stack-based buffer overflow in the type1_callsubr function within the Pdfwrite component. The flaw arises from improper handling in the font parsing logic, which can be triggered remotely. The vendor fixed the issue by modifying the macro usage in the font parsing loop to better align with normal usage patterns, mitigating the overflow risk. The CVSS 4.0 score is 5.3, indicating medium severity with network attack vector and no privileges required.
Potential Impact
Successful exploitation could lead to a stack-based buffer overflow, potentially allowing remote attackers to execute arbitrary code or cause a denial of service. The vulnerability is remotely exploitable without authentication. However, the impact is rated medium due to limited complexity and partial impact on confidentiality, integrity, and availability.
Mitigation Recommendations
A patch has been implemented by the vendor to fix this vulnerability. It is recommended to update Artifex Ghostscript to the fixed version beyond 10.09 or apply the vendor's patch as soon as possible to mitigate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-09-30T07:39:52.039Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abd1a472a4e24523d1a5fb9
Added to database: 09/30/2026, 14:18:47 UTC
Last enriched: 09/30/2026, 14:33:26 UTC
Last updated: 09/30/2026, 14:51:40 UTC
Views: 5
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