CVE-2026-45254

medium

Published 2026-05-21 · Modified 2026-05-21

CVSS v3

6.5

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

CVSS v2

—

VIR risk

6.5

Description

In the case of the cap_net service, when a key present in the old limit was omitted from the new limit, the missing key was treated as "allow any" instead of being rejected. In certain scenarios, an application that had previously restricted a subset of network operations could ask for a new limit that extended the permissions of the process.

Predictions

Exploit likelihood

75%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: secteam@freebsd.org — https://security.freebsd.org/advisories/FreeBSD-SA-26:24.cap_net.asc

OS impact

OS	Version	Status
freebsd	14.3	affected
freebsd	14.4	affected
freebsd	15.0	affected

References

https://security.freebsd.org/advisories/FreeBSD-SA-26:24.cap_net.asc

CWEs

CWE-269

Verify integrity in audit chain (admin only). AS-IS.