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CVE-2023-39490

21
FAUCET Score

CVE-2023-39490 is an out-of-bounds write vulnerability in PDF-XChange Editor and PDF-XChange PDF-Tools, allowing remote code execution through specially crafted PDF files. It carries a high CVSS score of 7.8, indicating a local attack vector with low complexity, requiring user interaction to open a malicious file, and potentially leading to full compromise of confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
9.5.366.0CPE matchmatch criteria
cpe:2.3:a:pdf-xchange:pdf-tools:9.5.366.0:*:*:*:*:*:*:*
9.5.366.0CPE matchmatch criteria
cpe:2.3:a:pdf-xchange:pdf-xchange_editor:9.5.366.0:*:*:*:*:*:*:*

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
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 29th 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

zerodayinitiative.com / advisories/ZDI-23-1134
Third Party Advisory