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CVE-2020-7452

29
FAUCET Score

CVE-2020-7452 is a critical vulnerability affecting FreeBSD 11.3 and 12.1 that allows a privileged user within a vnet jail to panic the host system and potentially execute arbitrary kernel code due to incorrect use of a user-controlled pointer in the epair virtual network module. With a CVSS score of 9.1, this vulnerability presents a high risk, requiring high privileges but having low attack complexity and leading to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
11.3CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.3:-:*:*:*:*:*:*
11.3CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.3:p1:*:*:*:*:*:*
11.3CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.3:p2:*:*:*:*:*:*
11.3CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.3:p3:*:*:*:*:*:*
11.3CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.3:p4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.83%
Probability of exploitation in next 30 days
EPSS Percentile
76.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0183 is in the 73rd percentile among its peer group of 464 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.7 Bluesky, 0.4 Mastodon, and 1.7 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

security.freebsd.org / advisories/FreeBSD-SA-20:07.epair.asc
PatchVendor Advisory