CVE-2025-6657: PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
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 buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26732.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Because the vulnerability (PRC file parsing out-of-bounds read; ZDI-CAN-26732) requires user interaction (visit a malicious page or open a malicious file) to exploit, prevent users from opening untrusted files or visiting untrusted pages (e.g., restrict/monitor access to untrusted URLs and block/scan inbound files) so the malicious PRC file/file-delivered exploit cannot be reached.
Event History
Frequently Asked Questions
What is the severity of CVE-2025-6657?
The severity of CVE-2025-6657 is classified as low, with potential for information disclosure.
How do I fix CVE-2025-6657?
To fix CVE-2025-6657, update to the latest version of PDF-XChange Editor provided by the vendor.
What type of vulnerability is CVE-2025-6657?
CVE-2025-6657 is an out-of-bounds read vulnerability that leads to information disclosure.
Are all versions of PDF-XChange Editor affected by CVE-2025-6657?
Yes, all versions of PDF-XChange Editor are potentially affected by CVE-2025-6657.
Is user interaction required to exploit CVE-2025-6657?
Yes, user interaction is required to exploit CVE-2025-6657.