CVE-2025-0906
Published: 11 February 2025
Summary
CVE-2025-0906 is a high-severity Out-of-bounds Read (CWE-125) vulnerability in Pdf-Xchange Pdf-Xchange Editor. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 36.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly mitigates the JB2 file parsing out-of-bounds read by requiring timely remediation through vendor patches for PDF-XChange Editor.
Addresses the root cause by enforcing validation of user-supplied JB2 file data to prevent out-of-bounds reads during parsing.
Provides memory safeguards such as address space layout randomization and data execution prevention to mitigate exploitation of the out-of-bounds read for information disclosure or code execution.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Out-of-bounds read in PDF file parsing enables memory disclosure (T1005) and client-side code execution via malicious file (T1204.002, T1203).
NVD Description
PDF-XChange Editor JB2 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…
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malicious page or open a malicious file. The specific flaw exists within the parsing of JB2 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-25434.
Deeper analysisAI
CVE-2025-0906 is an out-of-bounds read information disclosure vulnerability in the JB2 file parsing component of PDF-XChange Editor. The flaw stems from insufficient validation of user-supplied data during JB2 file processing, which can result in reading past the end of an allocated buffer and exposing sensitive information from affected installations. It carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) and is classified under CWE-125: Out-of-bounds Read.
Remote attackers can exploit this vulnerability through user interaction, such as inducing a target to visit a malicious web page or open a malicious file. No special privileges are required, and the low attack complexity enables attackers to disclose sensitive memory contents. When chained with other vulnerabilities, it can facilitate arbitrary code execution in the context of the PDF-XChange Editor process.
The Zero Day Initiative advisory ZDI-25-068, which canonized this as ZDI-CAN-25434, provides further technical details on the vulnerability. Security practitioners should consult this reference for recommended mitigations and any available patches.
Details
- CWE(s)