CVE-2023-42950Network attack vector

Arbitrary code execution via WebKit use-after-free

Published Mar 28, 2024 · Updated Nov 3, 2025

Use-after-free in WebKit across Safari and affected Apple platforms allows remote attackers to execute arbitrary code via crafted web content. Apple identifies a stale object lifetime error but has not published the affected code path or the operation that dereferences the freed object. Exploitation requires a user to process attacker-controlled web content and can run code with the privileges of the WebKit process.

CVSS severity8.8
High
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in WebKit across Safari and affected Apple platforms allows remote attackers to execute arbitrary code via crafted web content. Apple identifies a stale object lifetime error but has not published the affected code path or the operation that dereferences the freed object. Exploitation requires a user to process attacker-controlled web content and can run code with the privileges of the WebKit process.

The record

CVE
CVE-2023-42950
Published
Mar 28, 2024
Updated
Nov 3, 2025
Vendor
Apple
Product
iOS
Classifications
CWE-416, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <17.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOSversion=0 <17.2
Apple · iOS and iPadOSversion=unspecified <17.2
Apple · Safariversion=0 <17.2; version=unspecified <17.2
Apple · tvOSversion=0 <17.2; version=unspecified <17.2
Apple · macOSversion=0 <14.2; version=unspecified <14.2
Apple · iPadOSversion=0 <17.2
Apple · watchOSversion=0 <10.2; version=unspecified <10.2

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-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.

Technologies

Your stack

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Your stack

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