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

Quick assessment

Affected
FreeBSD FreeBSD
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD存在安全漏洞，该漏洞源于数据包验证不正确导致解析SCTP块参数时无限递归，可能导致堆栈溢出和崩溃，远程攻击者可构造数据包导致受影响系统崩溃。

AI Predicted 7.5 Difficulty: Easy EPSS 0.55% · P44

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
FreeBSD FreeBSD 15.0-RELEASE< p7 affected
14.4-RELEASE< p3 affected
14.3-RELEASE< p12 affected
13.5-RELEASE< p13 affected
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I. Basic Information for CVE-2026-7164

Vulnerability Information
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Vulnerability Title
pf can overflow the stack parsing crafted SCTP packets
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5
Vulnerability Title
FreeBSD 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD存在安全漏洞，该漏洞源于数据包验证不正确导致解析SCTP块参数时无限递归，可能导致堆栈溢出和崩溃，远程攻击者可构造数据包导致受影响系统崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeBSD FreeBSD 15.0-RELEASE ~ p7 -

II. Public POCs for CVE-2026-7164

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III. Intelligence Information for CVE-2026-7164

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Vendor Advisories for CVE-2026-7164 (1)

Same Patch Batch · FreeBSD · 2026-04-30 · 6 CVEs total

CVE-2026-42511 Remote code execution via malicious DHCP options
CVE-2026-7270 Local privilege escalation via execve()
CVE-2026-42512 Remotely triggerable out-of-bounds heap write in dhclient
CVE-2026-35547 Heap overflow in libnv
CVE-2026-39457 Stack overflow via select() file descriptor set overflow

IV. Related Vulnerabilities

Same product: FreeBSD
Same vendor: FreeBSD
Same weakness: CWE-674

V. Comments for CVE-2026-7164

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