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CVE-2018-17621

28
FAUCET Score

CVE-2018-17621 is a critical remote code execution vulnerability affecting Foxit Reader 9.0.1.5096 and other Foxit Reader versions on Windows. It stems from improper handling of Format events, specifically a use-after-free condition, allowing attackers to execute arbitrary code. Rated 8.8 HIGH on CVSS, exploitation requires user interaction, such as opening a malicious file or visiting a malicious page. There is no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9.1.0.5096CPE matchmatch criteria
cpe:2.3:a:foxitsoftware:reader:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.58%
Probability of exploitation in next 30 days
EPSS Percentile
88.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0358 is in the 87th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 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 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

foxitsoftware.com / support/security-bulletins.php
MitigationVendor Advisory
zerodayinitiative.com / advisories/ZDI-18-1102
Third Party AdvisoryVDB Entry