High severity · published Apr 30, 2026
CVE-2026-7164
pf can overflow the stack parsing crafted SCTP packets
7.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
FreeBSD · FreeBSD
15.0-RELEASE before p7; 14.4-RELEASE before p3; 14.3-RELEASE before p12; 13.5-RELEASE before p13 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7164
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7164
Vendor Advisory
https://security.freebsd.org/advisories/FreeBSD-SA-26:14.pf.asc
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