CVE-2026-45254

🔶 medium

Summary

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.

CVSS Score

6.5

Medium

EPSS Score

0.2

Exploit Probability

Published Date

2026-05-21

First Seen: 2026-05-22

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 46.5% of all 365,312 vulnerabilities in our database.

#195,288

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: May 21, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Partial

Limited system impact

🏆 Discovered By

Joshua Rogers of AISLE Research Team

SSVC data provided by CISA

Last Modified 2026-07-23

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-269

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
freebsd	freebsd	Affected	v14.3
freebsd	freebsd	Affected	v14.4
freebsd	freebsd	Affected	v15.0

🔗 References 1

https://security.freebsd.org/advisories/FreeBSD-SA-2...

Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-58089	⚠️ high	7.8	0.1	When a process calls execve(2) to execute a setuid or setgid image, hwpmc(4) is supposed to detach PMCs owned by unprivi...	2026-08-26
CVE-2026-58090	⚠️ high	7.8	0.2	The SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from the socket b...	2026-08-26
CVE-2026-58091	⚠️ high	7.8	0.2	The implementation of this ioctl attempts to acquire locks on all channels in a sync group. If locking a channel would ...	2026-08-26
CVE-2026-58092	⚠️ high	8.1	0.4	In FreeBSD 15.0, the kernel structure used to represent user credentials changed: previously the primary group ID was st...	2026-08-26
CVE-2026-58093	⚠️ high	7.0	0.1	The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring the tty loc...	2026-08-26
CVE-2026-58094	⚠️ high	7.8	0.1	The FIOSSHMLPGCNF ioctl(2) operation configures the page size for a largepage shared memory object. This is intended to...	2026-08-26

These CVEs affect the same products