Vulnerability · Published Apr 30, 2026 · Assigned by freebsd

CVE-2026-7164pf can overflow the stack parsing crafted SCTP packets

High 7.5

In plain English

A high-severity security flaw in FreeBSD from FreeBSD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 62.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Incorrect packet validation allowed unbounded recursion parsing SCTP chunk parameters. This can eventually result in a stack overflow and panic. Remote attackers can craft packets which cause affected systems to panic. This affects any system where pf is configured to process traffic, independent of the configured ruleset.

Affected products (as reported)

Vendor	Product	Versions
FreeBSD	FreeBSD	15.0-RELEASE – before p714.4-RELEASE – before p314.3-RELEASE – before p1213.5-RELEASE – before p13

Weakness: CWE-674, CWE-791 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://security.freebsd.org/advisories/FreeBSD-SA-26:14.pf.asc vendor-advisory