CVE-2022-22651Network attack vector

Remote system crash via SMB out-of-bounds write

Published Mar 18, 2022 · Updated Aug 3, 2024

Out-of-bounds write in SMB in Apple macOS Monterey before 12.3 allows remote attackers to crash the system or corrupt kernel memory. The SMB component writes beyond a buffer boundary because its bounds checking is insufficient; Apple has not disclosed the affected function or input. Network access to SMB is required, and successful exploitation can terminate the host or corrupt kernel memory.

CVSS severity7.5
High
EPSS probability1.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in SMB in Apple macOS Monterey before 12.3 allows remote attackers to crash the system or corrupt kernel memory. The SMB component writes beyond a buffer boundary because its bounds checking is insufficient; Apple has not disclosed the affected function or input. Network access to SMB is required, and successful exploitation can terminate the host or corrupt kernel memory.

The record

CVE
CVE-2022-22651
Published
Mar 18, 2022
Updated
Aug 3, 2024
Vendor
Apple
Product
macOS
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=unspecified <12.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · macOSversion=unspecified <12.3

Published CVSS scores

7.8NVDAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5NVDCVSS: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-787Out-of-bounds Write
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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