ZDI-CAN-25421: ZDI-25-070: PDF-XChange Editor RTF 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 RTF 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.
Other sources
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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2025-0903.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-25421?
ZDI-CAN-25421 has a high severity level due to its potential for remote code execution.
How do I fix ZDI-CAN-25421?
To fix ZDI-CAN-25421, update your PDF-XChange Editor to the latest version provided by Tracker Software.
What type of attack exploits ZDI-CAN-25421?
ZDI-CAN-25421 can be exploited through social engineering, requiring user interaction with a malicious page or file.
What versions of PDF-XChange Editor are affected by ZDI-CAN-25421?
ZDI-CAN-25421 affects all versions of PDF-XChange Editor without requiring specific version details.
Can ZDI-CAN-25421 be exploited without user interaction?
No, the exploitation of ZDI-CAN-25421 necessitates user interaction to visit a malicious site or open a harmful file.