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

0.0

Exploit Probability

Published Date

2026-05-21

First Seen: 2026-05-22

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 47.8% of all 328,009 vulnerabilities in our database.

#171,192

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 2026-05-21

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-2026-45250	⚠️ high	7.8	0.0	The setcred(2) system call is only available to privileged users. However, before the privilege level of the caller is ...	2026-05-21
CVE-2026-39461	⚠️ high	8.8	0.0	libcasper(3) communicates with helper processes via UNIX domain sockets, and uses the select(2) system call to wait for ...	2026-05-21
CVE-2026-45251	⚠️ high	7.8	0.0	A file descriptor can be closed while a thread is blocked in a poll(2) or select(2) call waiting for that descriptor. B...	2026-05-21
CVE-2026-45252	🔶 medium	5.5	0.1	When a fusefs file system implements extended attributes, the kernel may send a FUSE_LISTXATTR message to the userspace ...	2026-05-21
CVE-2026-45253	⚠️ high	8.4	0.0	ptrace(PT_SC_REMOTE) failed to properly validate parameters for the syscall(2) and __syscall(2) meta-system calls. As a...	2026-05-21
CVE-2026-45255	⚠️ high	7.5	0.0	When bsdinstall or bsdconfig are prompted to scan for nearby Wi-Fi networks, they build up a list of network names and u...	2026-05-21

These CVEs affect the same products