CVE-2025-2231: pdf-tools Out-of-bounds Read — Fix

Description

PDF-XChange Editor RTF File Parsing Out-Of-Bounds Read 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 user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25473.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
pdf-xchange	pdf-tools	All
pdf-xchange	pdf-xchange_editor	All

References

Advisories & Patches

https://www.pdf-xchange.com/support/security-bulletins.html

Other References

https://www.zerodayinitiative.com/advisories/ZDI-25-129/

Frequently Asked Questions

What is CVE-2025-2231? +

PDF-XChange Editor RTF File Parsing Out-Of-Bounds Read 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 user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25473. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-2231? +

CVE-2025-2231 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-2231? +

CVE-2025-2231 affects products from pdf-xchange, specifically: pdf-tools, pdf-xchange_editor. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-2231? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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