Bug 2543049 (CVE-2026-19547)

Summary: CVE-2026-19547 ghostscript: ghostscript: Local privilege escalation via predictable resource search path
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: high    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Ghostscript. In Windows environments, the application searches for PostScript resource files in predictable directory paths that do not exist by default. An authenticated local user can exploit this issue by creating the required directory structure and planting a malicious PostScript file. When another user or system service runs Ghostscript, the file is automatically loaded and executed, leading to arbitrary code execution and privilege escalation with the permissions of the executing process.
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Description OSIDB Bzimport 2026-09-29 10:22:14 UTC 
Ghostscript for Windows is vulnerable to local privilege escalation through PostScript resource file hijacking. Due to the application searching for PostScript resource files in predictable paths under C:\\gs\\ that do not exist by default on Windows installations, combined with Windows default ACLs allowing any authenticated user to create directories at the root of C:\\, an attacker who is an authenticated local user can create the expected directory structure and plant a malicious PostScript file. When any user or service subsequently runs Ghostscript, the planted file is automatically loaded and executed with the full privileges of the Ghostscript process. This results in full compromise of Ghostscript process context, as well as running arbitrary code on the machine with Ghostscript process privileges.


This issue was fixed in version 10.08.0.