CVE-2022-23088Public exploit

Kernel code execution via oversized Mesh ID

Published Feb 15, 2024 · Updated Apr 24, 2025

Heap buffer overflow in FreeBSD net80211 allows physically proximate attackers to execute kernel code via a malicious Wi-Fi beacon. The sta_add() function copies an attacker-controlled IEEE 802.11s Mesh ID into the fixed-size se_meshid heap buffer without validating its length. Exposure requires an enabled Wi-Fi interface scanning while unassociated; systems not using Wi-Fi are unaffected, while exploitation grants kernel-level code execution.

CVSS severity9.8
Critical
EPSS probability3.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in FreeBSD net80211 allows physically proximate attackers to execute kernel code via a malicious Wi-Fi beacon. The sta_add() function copies an attacker-controlled IEEE 802.11s Mesh ID into the fixed-size se_meshid heap buffer without validating its length. Exposure requires an enabled Wi-Fi interface scanning while unassociated; systems not using Wi-Fi are unaffected, while exploitation grants kernel-level code execution.

The record

CVE
CVE-2022-23088
Published
Feb 15, 2024
Updated
Apr 24, 2025
Vendor
The FreeBSD Project
Product
FreeBSD
Classifications
CWE-94, T1203
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 2025Record 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=12.3-release <p5
  2. Affected versionversion=12.3-RELEASE <p5
  3. Affected versionversion=13.0-release <p11
  4. Affected versionversion=13.0-RELEASE <p11
  5. Affected versionversion=13.1-RC1 <p1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The FreeBSD Project · FreeBSDversion=12.3-release <p5; version=12.3-RELEASE <p5; version=13.0-release <p11; version=13.0-RELEASE <p11; version=13.1-RC1 <p1

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1203Exploitation for Client Execution

Public exploit references

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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