CVE-2026-7164Network attack vector

Remote panic via recursive SCTP parameter parsing

Published Apr 30, 2026 · Updated Apr 30, 2026

Uncontrolled recursion in pf on affected FreeBSD releases allows remote attackers to panic systems via crafted SCTP packets. The pf_multihome_scan function accepts add/delete-address parameters inside INIT or INIT-ACK chunks and recursively reparses their nested payloads without a depth bound. Remote attackers whose SCTP traffic is processed by pf can trigger a kernel stack overflow and panic, independent of the ruleset; no data access or modification is reported.

CVSS severity7.5
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled recursion in pf on affected FreeBSD releases allows remote attackers to panic systems via crafted SCTP packets. The pf_multihome_scan function accepts add/delete-address parameters inside INIT or INIT-ACK chunks and recursively reparses their nested payloads without a depth bound. Remote attackers whose SCTP traffic is processed by pf can trigger a kernel stack overflow and panic, independent of the ruleset; no data access or modification is reported.

The record

CVE
CVE-2026-7164
Published
Apr 30, 2026
Updated
Apr 30, 2026
Vendor
The FreeBSD Project
Product
FreeBSD
Classifications
CWE-791, CWE-674, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=13.5-RELEASE <p13
  2. Affected versionversion=14.3-RELEASE <p12
  3. Affected versionversion=14.4-RELEASE <p3
  4. Affected versionversion=15.0-RELEASE <p7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The FreeBSD Project · FreeBSDversion=13.5-RELEASE <p13; version=14.3-RELEASE <p12; version=14.4-RELEASE <p3; version=15.0-RELEASE <p7

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-791Incomplete Filtering of Special Elements
CWE-674Uncontrolled Recursion
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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