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CVE-2019-5604

31
FAUCET Score

CVE-2019-5604 describes an out-of-bounds read vulnerability in the bhyve hypervisor's emulated XHCI device within specific versions of FreeBSD 11.2, 11.3, and 12.0. This flaw allows a malicious guest operating system to provide invalid data, leading to system crashes or unauthorized access to host memory. With a CVSS score of 9.6 (CRITICAL), the vulnerability is easily exploitable over the network with low privileges and no user interaction, potentially compromising confidentiality and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, its high severity warrants immediate patching.

Impacted Technologies

VendorProductVersion(s)CPE
11.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.0:-:*:*:*:*:*:*
11.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.2:-:*:*:*:*:*:*
11.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.2:p10:*:*:*:*:*:*
11.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.2:p11:*:*:*:*:*:*
11.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.2:p2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.09%
Probability of exploitation in next 30 days
EPSS Percentile
86.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0309 is in the 88th percentile among its peer group of 1,128 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 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

packetstormsecurity.com / files/153753/FreeBSD-Security-Advisory-FreeBSD-SA-19-16.bhyve.html
Third Party AdvisoryVDB Entry
security.freebsd.org / advisories/FreeBSD-SA-19:16.bhyve.asc
Vendor Advisory
security.netapp.com / advisory/ntap-20190814-0003
Third Party Advisory