CVE-2023-42890Network attack vector

Arbitrary code execution via redirect lifecycle mishandling

Published Dec 12, 2023 · Updated Feb 13, 2025

WebKit memory corruption in affected Apple products allows remote attackers to execute arbitrary code by processing crafted web content. NetworkLoad::willPerformHTTPRedirection continued after didCompleteWithError despite its lifecycle side effects, reusing the current request instead of invoking the completion handler and returning. Exploitation requires a user or application to process attacker-controlled web content, and successful execution runs in the affected WebKit process context.

CVSS severity8.8
High
EPSS probability3.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

WebKit memory corruption in affected Apple products allows remote attackers to execute arbitrary code by processing crafted web content. NetworkLoad::willPerformHTTPRedirection continued after didCompleteWithError despite its lifecycle side effects, reusing the current request instead of invoking the completion handler and returning. Exploitation requires a user or application to process attacker-controlled web content, and successful execution runs in the affected WebKit process context.

The record

CVE
CVE-2023-42890
Published
Dec 12, 2023
Updated
Feb 13, 2025
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-94, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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 <17.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <17.2
Apple · Safariversion=unspecified <17.2
Apple · tvOSversion=unspecified <17.2
Apple · macOSversion=unspecified <14.2
Apple · watchOSversion=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

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-94Improper Control of Generation of Code ('Code Injection')
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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