Apple iOS/iPadOS up to 16.3.0 WebKit type confusion

CVSS Meta Temp Score
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CTI Interest Score
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7.9$5k-$25k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Apple iOS and iPadOS up to 16.3.0. Affected is an unknown function of the component WebKit. This manipulation causes type confusion. This vulnerability is registered as CVE-2023-23529. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Apple iOS and iPadOS up to 16.3.0 (Smartphone Operating System) and classified as critical. Affected by this vulnerability is an unknown code of the component WebKit. The manipulation with an unknown input leads to a type confusion vulnerability. The CWE definition for the vulnerability is CWE-843. The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 02/13/2023 as HT213635 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2023-23529. It demands that the victim is doing some kind of user interaction. Technical details are unknown but an exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/12/2025). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 02/14/2023 with a due date of 03/07/2023:

Apply updates per vendor instructions.

Upgrading to version 16.3.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

A type confusion issue was addressed with improved checks.

The vulnerability is also documented in the databases at Zero-Day.cz (745) and EUVD (EUVD-2023-27629). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Type confusion
CWE: CWE-843
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: iOS/iPadOS 16.3.1

Timelineinfo

01/12/2023 🔍
02/13/2023 +32 days 🔍
02/13/2023 +0 days 🔍
02/14/2023 +1 days 🔍
10/12/2025 +971 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT213635
Status: Confirmed

CVE: CVE-2023-23529 (🔍)
GCVE (CVE): GCVE-0-2023-23529
GCVE (VulDB): GCVE-100-220945
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 02/14/2023 16:22
Updated: 10/12/2025 08:49
Changes: 02/14/2023 16:22 (9), 02/14/2023 16:23 (9), 02/14/2023 16:26 (26), 02/14/2023 16:28 (5), 03/15/2023 07:12 (2), 03/15/2023 07:19 (11), 04/28/2024 08:19 (23), 05/15/2024 17:15 (1), 06/15/2024 03:06 (2), 09/27/2024 00:47 (2), 01/29/2025 02:04 (11), 04/27/2025 23:41 (3), 10/12/2025 08:49 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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