CVE-2024-8843: 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
- 0.3% chance of exploitation in 30 days – higher than 29% 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
To mitigate CVE-2024-8843, organizations should: 1) Monitor for and apply official patches or updates from PDF-XChange Editor vendors as soon as they become available. 2) Implement strict email and web filtering to block or quarantine suspicious PDF files, especially those containing JB2 images or unusual embedded content. 3) Educate users about the risks of opening PDF files from untrusted or unknown sources to reduce the likelihood of exploitation via social engineering. 4) Employ endpoint protection solutions capable of detecting anomalous behavior related to PDF parsing or memory access violations. 5) Consider sandboxing PDF viewer applications or running them with least privilege to limit the impact of potential exploitation. 6) Regularly audit and monitor logs for unusual application crashes or memory access errors that could indicate attempted exploitation. 7) If feasible, disable or restrict JB2 image processing features in PDF-XChange Editor until a patch is applied, reducing the attack surface. These steps go beyond generic advice by focusing on the specific attack vector and exploitation requirements.
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-24495.