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CVE-2016-8856

21
FAUCET Score

CVE-2016-8856 is a critical vulnerability affecting Foxit Reader for Mac (2.1.0.0804 and earlier) and Foxit Reader for Linux (2.1.0.0805 and earlier). The flaw stems from weak, world-writable file permissions on core installation files, enabling an attacker to overwrite them with malicious code. This could lead to arbitrary code execution, including privilege escalation, with a CVSS score of 7.8 (High). While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered some community discussion, indicating awareness of its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.1.0.0804CPE matchmatch criteria
cpe:2.3:a:foxitsoftware:reader:*:*:*:*:*:mac_os_x:*:*
<= 2.1.0.0805CPE matchmatch criteria
cpe:2.3:a:foxitsoftware:reader:*:*:*:*:*:linux_kernel:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
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
0.82%
Probability of exploitation in next 30 days
EPSS Percentile
53.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0082 is in the 89th percentile among its peer group of 17,070 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 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

foxitsoftware.com / support/security-bulletins.php
PatchVendor Advisory
securityfocus.com / bid/93608
Technical DescriptionVDB Entry
securitytracker.com / id/1037101