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CVE-2023-42077: PDF-XChange Editor EMF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-03 · updated 2026-06-17
• Weakness: CWE-122

Description

PDF-XChange Editor EMF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of EMF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21818.

Affected products

• PDF-XChange Pdf-Tools: 10.0.1.371
• PDF-XChange Editor: 10.0.1.371

References

• https://www.tracker-software.com/support/security-bulletins.html
• https://www.zerodayinitiative.com/advisories/ZDI-23-1379/
• https://www.tracker-software.com/support/security-bulletins.html
• https://www.zerodayinitiative.com/advisories/ZDI-23-1379/

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