Apple iOS/iPadOS access control

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.2$5k-$25k0.00

Summaryinfo

A vulnerability was found in Apple iOS and iPadOS. It has been declared as critical. This impacts an unknown function. Executing a manipulation can lead to access control. This vulnerability appears as CVE-2023-40520. The attack requires local access. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS and iPadOS (Smartphone Operating System) (version now known). It has been declared as critical. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The issue was addressed with improved checks. This issue is fixed in tvOS 17, iOS 17 and iPadOS 17, watchOS 10. An app may be able to access edited photos saved to a temporary directory.

The weakness was presented 09/27/2023. The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2023-40520 since 08/14/2023. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 11/06/2025). It is expected to see the exploit prices for this product increasing in the near future.The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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License

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/14/2023 🔍
09/27/2023 +44 days 🔍
09/27/2023 +0 days 🔍
11/06/2025 +771 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2023-40520 (🔍)
GCVE (CVE): GCVE-0-2023-40520
GCVE (VulDB): GCVE-100-240568
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 09/27/2023 18:44
Updated: 11/06/2025 20:47
Changes: 09/27/2023 18:44 (40), 10/20/2023 08:14 (11), 11/06/2025 20:47 (16)
Complete: 🔍
Cache ID: 216::103

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