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CVE-2025-6661

22
FAUCET Score

CVE-2025-6661 is a use-after-free vulnerability in PDF-XChange Editor and PDF-XChange PDF Tools, allowing remote code execution. This flaw, stemming from improper validation of App objects, requires user interaction, such as opening a malicious file, to exploit. Rated 7.8 HIGH on CVSS, it poses a significant risk for arbitrary code execution with high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
10.5.2.395CPE matchmatch criteria
cpe:2.3:a:pdf-xchange:pdf-tools:10.5.2.395:*:*:*:*:*:*:*
10.5.2.395CPE matchmatch criteria
cpe:2.3:a:pdf-xchange:pdf-xchange_editor:10.5.2.395:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 15th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

pdf-xchange.com / support/security-bulletins.html
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-25-446
Third Party Advisory