CVE-2025-0905
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedPDF-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 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 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-25433.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidencePDF-XChange Editor contains an out-of-bounds read vulnerability in its JB2 file parser due to insufficient validation of user-supplied data. The lack of proper bounds checking allows reading past the end of an allocated memory object, leading to sensitive information disclosure. This vulnerability can be chained with other flaws to achieve arbitrary code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 10.4.2.390CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm PDF-XChange Editor installationCheck for PDF-XChange Editor in installed programs (Windows Control Panel > Programs and Features, or run 'Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* | Select-Object DisplayName, DisplayVersion' in PowerShell)Affected if PDF-XChange Editor appears in the list of installed software
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Identify installed versionLocate the PDF-XChange Editor executable (typically in C:\Program Files\PDF-XChange Editor or C:\Program Files (x86)\PDF-XChange Editor), right-click the executable, select Properties, and check the File Version on the Details tabAffected if The version number is less than 10.4.2.390 (e.g., 10.4.1.x, 10.3.x, or earlier)
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Check for JB2 file handling capabilityAttempt to open or import a JB2-format file (check if the application recognizes .jb2 or JB2-coded PDF content) or review the application documentation for supported image codecsAffected if The application can process JB2 files and the version is below 10.4.2.390
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Assess exposure to untrusted filesReview whether the application is configured to automatically open or preview PDF files from untrusted sources, or if users commonly open PDF attachments from email or web downloadsAffected if Users can open JB2-containing PDFs from untrusted sources without restrictions
You are affected if PDF-XChange Editor is installed with a version below 10.4.2.390 and can process JB2 files from untrusted sources.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped10.4.2.390
Avoid opening untrusted or unknown JB2 files in PDF-XChange Editor. Apply vendor patches when available and consider defense-in-depth measures such as disabling JavaScript execution and using application sandboxing.
10.4.2.390
- Verify the current version of PDF-XChange Editor installed on the system
- Download PDF-XChange Editor version 10.4.2.390 or later from the official vendor website
- Close PDF-XChange Editor if currently running
- Install the updated version following standard installation procedures
- Verify the installed version is 10.4.2.390 or higher
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-0905 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-0905 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data