Ghostscript flaw lets hackers hijack servers via PDF uploads
Summary
A critical heap buffer overflow vulnerability, identified as CVE-2026-39919, has been discovered in the Ghostscript interpreter and rendering engine. This flaw enables remote code execution when attackers upload specially crafted PDF files to vulnerable systems.
IFF Assessment
FOE
This vulnerability allows attackers to execute arbitrary code remotely, posing a significant threat to system security.
Severity
9.8
Critical
Defender Context
This vulnerability in Ghostscript, a widely used interpreter for PostScript and PDF files, presents a significant risk for servers processing user-uploaded documents. Defenders should prioritize patching Ghostscript or implementing input validation to block malicious PDFs. This highlights the ongoing threat of vulnerabilities in core software components.