CVE-2026-7164

pf can overflow the stack parsing crafted SCTP packets

HIGH

7.5

CVSS Score

Published: April 30, 2026 at 07:23 AM UTC

Updated: June 17, 2026 at 11:01 AM UTC

1 product affected across 1 vendorFreeBSD

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Severity

HIGH7.5

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

FreeBSD · Freebsd

95%

13.5-RELEASE ≤ v < p1314.3-RELEASE ≤ v < p1214.4-RELEASE ≤ v < p315.0-RELEASE ≤ v < p713.5 13.5 beta3 13.5 p1 13.5 p10 13.5 p11 13.5 p12 13.5 p2 13.5 p3 13.5 p4 13.5 p5 13.5 p6 13.5 p7 13.5 p8 13.5 p9 13.5-RELEASE 14.3 14.3 p1 14.3 p10 14.3 p11 14.3 p2 14.3 p3 14.3 p4 14.3 p5 14.3 p6 14.3 p7 14.3 p8 14.3 p9 14.3-RELEASE 14.4 14.4 p1 14.4 p214.4 rc114.4-RELEASE 15.0 15.0 p1 15.0 p2 15.0 p3 15.0 p4 15.0 p5 15.0 p6 15.0-RELEASE

Affected range stops below p12, so it looks safe — our inference, not a vendor statement

Affected range stops below p13, so it looks safe — our inference, not a vendor statement

Affected range stops below p3, so it looks safe — our inference, not a vendor statement

Affected range stops below p7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

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

References (1)

Vendor Advisory

Source: cverecord

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

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-674CWE-791

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