CVE-2024-8839: PDF-XChange Editor · Out-of-bounds Read
Affects PDF-XChange EditorSource CVE Database V5
Not known to be exploited · CVSS 3.3 Low.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 22 Nov 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| PDF-XChange PDF-XChange Editor | Affected
| Fixed in– |
AI-suggested
1. Monitor PDF-XChange Editor vendor announcements for official patches addressing CVE-2024-8839 and apply updates promptly once available. 2. Until a patch is released, restrict usage of PDF-XChange Editor version 10.3.0.386, especially in high-risk environments. 3. Educate users to avoid opening PDF files from untrusted or unknown sources and to be cautious with email attachments and links. 4. Employ network-level protections such as email filtering and web content scanning to detect and block malicious PDFs. 5. Use endpoint security solutions capable of detecting anomalous behavior related to PDF processing. 6. Consider sandboxing PDF viewers or running them with least privilege to limit potential impact of exploitation. 7. Regularly audit and monitor logs for unusual application behavior or crashes that might indicate attempted exploitation. 8. Implement data loss prevention (DLP) controls to detect and prevent unauthorized data exfiltration that could result from information disclosure vulnerabilities.
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 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-24419.