CVE-2022-26700Network attack vector

Code execution via WebKit out-of-bounds write

Published Sep 23, 2022 · Updated May 22, 2025

Memory corruption in WebKit in Apple macOS before 12.4 and watchOS before 8.6 allows remote attackers to execute code via crafted web content. The undisclosed WebKit state-management path writes beyond the intended memory buffer while processing untrusted content. Successful exploitation requires a user to process malicious web content and yields code execution in the affected WebKit process.

CVSS severity8.8
High
EPSS probability1.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in WebKit in Apple macOS before 12.4 and watchOS before 8.6 allows remote attackers to execute code via crafted web content. The undisclosed WebKit state-management path writes beyond the intended memory buffer while processing untrusted content. Successful exploitation requires a user to process malicious web content and yields code execution in the affected WebKit process.

The record

CVE
CVE-2022-26700
Published
Sep 23, 2022
Updated
May 22, 2025
Vendor
Apple
Product
macOS
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 23, 2022CVE publishedPublication date reported by the CVE source.
  2. May 22, 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=unspecified <12.4
  2. Affected versionversion=unspecified <15.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · macOSversion=unspecified <12.4; version=unspecified <15.5
Apple · watchOSversion=unspecified <15.5; version=unspecified <8.6

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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