FreeBSD SCTP Chunk Parameter Parser recursion

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in FreeBSD. Affected is an unknown function of the component SCTP Chunk Parameter Parser. Such manipulation leads to recursion. This vulnerability is referenced as CVE-2026-7164. It is possible to launch the attack remotely. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in FreeBSD (unknown version). It has been rated as critical. Affected by this issue is an unknown code block of the component SCTP Chunk Parameter Parser. The manipulation with an unknown input leads to a recursion vulnerability. Using CWE to declare the problem leads to CWE-674. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. Impacted is availability. CVE summarizes:

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.

The weakness was published by Igor Gabriel Sousa E Souza. The advisory is shared for download at security.freebsd.org. This vulnerability is handled as CVE-2026-7164 since 04/27/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/01/2026). The MITRE ATT&CK project declares the attack technique as T1499.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1324). Once again VulDB remains the best source for vulnerability data.

Affected

  • FreeBSD Project FreeBSD OS

Productinfo

Type

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Recursion
CWE: CWE-674 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/27/2026 CVE reserved
04/30/2026 +3 days Advisory disclosed
04/30/2026 +0 days VulDB entry created
05/01/2026 +1 days VulDB entry last update

Sourcesinfo

Product: freebsd.org

Advisory: security.freebsd.org
Researcher: Igor Gabriel Sousa E Souza
Status: Confirmed

CVE: CVE-2026-7164 (🔒)
GCVE (CVE): GCVE-0-2026-7164
GCVE (VulDB): GCVE-100-360260
CERT Bund: WID-SEC-2026-1324 - FreeBSD Project FreeBSD OS: Mehrere Schwachstellen

Entryinfo

Created: 04/30/2026 12:13
Updated: 05/01/2026 05:16
Changes: 04/30/2026 12:13 (53), 05/01/2026 05:16 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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