CVE-2022-22620Known exploitationNetwork attack vector

Remote code execution via WebKit use-after-free

Published Mar 18, 2022 · Updated Oct 21, 2025

Use-after-free in WebKit in Apple Safari before 15.3 and macOS Monterey before 12.2.1 allows remote attackers to execute code via crafted web content. WebKit accesses memory after its object has been freed while processing attacker-controlled page content, allowing control of execution. A victim must load the crafted content; successful exploitation executes attacker-controlled code in the affected browser or WebKit process.

CVSS severity8.8
High
EPSS probability16.34%
Next 30 days · Sep 17, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in WebKit in Apple Safari before 15.3 and macOS Monterey before 12.2.1 allows remote attackers to execute code via crafted web content. WebKit accesses memory after its object has been freed while processing attacker-controlled page content, allowing control of execution. A victim must load the crafted content; successful exploitation executes attacker-controlled code in the affected browser or WebKit process.

The record

CVE
CVE-2022-22620
Published
Mar 18, 2022
Updated
Oct 21, 2025
Vendor
Apple
Product
Safari
Classifications
CWE-416, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 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 <15.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · Safariversion=unspecified <15.3
Apple · macOSversion=unspecified <12.2; version=unspecified <15.3

Published CVSS scores

8.8CISACVSS: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 exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
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.

Reported exploitation

Technologies

Your stack

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Your stack

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