CVE-2025-6656

PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information 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 PRC files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26731.

• CWE-125

• https://www.pdf-xchange.com/support/security-bulletins.htmlVendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-25-441/Third Party Advisory

Published

Jun 25, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2025-66554Contacts app for Nextcloud easily syncs contacts from variou…5.4
• CVE-2025-66555AirKeyboard iOS App 1.0.5 contains a missing authentication …8.8
• CVE-2025-66556Nextcloud talk is a video & audio conferencing app for Nextc…4.3
• CVE-2025-66557Nextcloud Deck is a kanban style organization tool aimed at …4.3
• CVE-2025-66558Nextcloud Twofactor WebAuthn is the WebAuthn Two-Factor Prov…4.3
• CVE-2025-66559Taiko Alethia is an Ethereum-equivalent, permissionless, bas…8
• CVE-2025-66560Quarkus is a Cloud Native, (Linux) Container First framework…7.5
• CVE-2025-66561SysReptor is a fully customizable pentest reporting platform…5.4
• CVE-2025-66562TUUI is a desktop MCP client designed as a tool unitary util…9.6
• CVE-2025-66563Monkeytype is a minimalistic and customizable typing test. I…6.1
• CVE-2025-66564Sigstore Timestamp Authority is a service for issuing RFC 31…7.5
• CVE-2025-66565Fiber Utils is a collection of common functions created for …9.8