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CVE-2026-35547

33
FAUCET Score

When processing the header of an incoming message, libnv failed to properly validate the message size. The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.

First published: Apr 30, 2026Last modified: May 1, 2026

Impacted Technologies

VendorProductVersion(s)CPE
13.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:13.5:-:*:*:*:*:*:*
13.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:13.5:beta3:*:*:*:*:*:*
13.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:13.5:p1:*:*:*:*:*:*
13.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:13.5:p10:*:*:*:*:*:*
13.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:13.5:p11:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.32%
Probability of exploitation in next 30 days
EPSS Percentile
23.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 6th percentile among its peer group of 51,553 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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-26:17.libnv.asc
Vendor Advisory