Apple macOS up to 13.2.1 ImageIO out-of-bounds

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7.2	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Apple macOS up to 13.2.1. This affects an unknown function of the component ImageIO. This manipulation causes out-of-bounds. The identification of this vulnerability is CVE-2023-27946. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Apple macOS up to 13.2.1 (Operating System) and classified as critical. Affected by this vulnerability is some unknown processing of the component ImageIO. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Ventura 13.3, iOS 15.7.4 and iPadOS 15.7.4, macOS Monterey 12.6.4, macOS Big Sur 11.7.5. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.

The weakness was shared 03/27/2023 by Mickey Jin as HT213670 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2023-27946. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The advisory points out:

Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution

Upgrading to version 13.3 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

An out-of-bounds read was addressed with improved bounds checking.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-31672). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Operating System

Vendor

Apple

Name

macOS

Version

License

commercial

Website

Vendor: https://www.apple.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

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

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector: 🔍

CVSSv2info

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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: macOS 13.3

Timelineinfo

03/08/2023 🔍
03/27/2023 +18 days 🔍
03/27/2023 +0 days 🔍
03/29/2023 +2 days 🔍
11/29/2025 +976 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT213670
Researcher: Mickey Jin
Status: Confirmed

CVE: CVE-2023-27946 (🔍)
GCVE (CVE): GCVE-0-2023-27946
GCVE (VulDB): GCVE-100-224419
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 03/29/2023 15:22
Updated: 11/29/2025 17:19
Changes: 03/29/2023 15:22 (5), 03/29/2023 15:23 (14), 03/29/2023 15:26 (28), 04/19/2023 12:46 (1), 12/12/2024 16:40 (27), 01/29/2025 16:59 (11), 04/27/2025 13:47 (3), 11/29/2025 17:19 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.