Vulnerability details

CVE-2025-6660

PDF-XChange Editor

PDF-XChange Editor GIF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

CVSS 3.0

7.8High

Official description

PDF-XChange Editor GIF File Parsing Heap-based Buffer Overflow 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 GIF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26763.

CVSS scores

Score	Version	Source	Vector
7.8High	3.0	CVEProject cvelistV5 (CNA) (zdi)	`CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
PDF-XChange	PDF-XChange Editor	10.5.2.395	CVEProject cvelistV5 (CNA)

References and advisories

https://www.zerodayinitiative.com/advisories/ZDI-25-443/ x_research-advisory
https://www.pdf-xchange.com/support/security-bulletins.html vendor-advisory

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Details

Published: 2025-06-26
Last updated: 2025-06-26
State: Published
Assigner (CNA): zdi

Exploit prediction (EPSS)

0.29%

Probability of exploitation in 30 days

22.5%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-122
Heap-based Buffer Overflow