Apple tvOS up to 16.3.3 Core Bluetooth out-of-bounds

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.
4.1	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Apple tvOS up to 16.3.3. Impacted is an unknown function of the component Core Bluetooth. Performing a manipulation results in out-of-bounds. This vulnerability is identified as CVE-2023-23528. The attack can only be performed from the local network. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Apple tvOS up to 16.3.3 (Digital Media Player). This affects an unknown code of the component Core Bluetooth. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality.

The weakness was released 03/27/2023 by Jianjun Dai and Guang Gong as HT213674 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is uniquely identified as CVE-2023-23528. Neither technical details nor an exploit are publicly available. The advisory points out:

Processing a maliciously crafted Bluetooth packet may result in disclosure of process memory

Upgrading to version 16.4 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-2023-27628). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Digital Media Player

Vendor

Apple

Name

tvOS

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: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

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

Physical: No
Local: No
Remote: Partially

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: tvOS 16.4

Timelineinfo

01/12/2023 🔍
03/27/2023 +73 days 🔍
03/27/2023 +0 days 🔍
03/29/2023 +2 days 🔍
10/12/2025 +928 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT213674
Researcher: Jianjun Dai, Guang Gong
Status: Confirmed

CVE: CVE-2023-23528 (🔍)
GCVE (CVE): GCVE-0-2023-23528
GCVE (VulDB): GCVE-100-224361
EUVD: 🔍

Entryinfo

Created: 03/29/2023 13:38
Updated: 10/12/2025 08:49
Changes: 03/29/2023 13:38 (19), 03/29/2023 13:41 (27), 04/19/2023 08:23 (1), 10/12/2025 08:49 (16)
Complete: 🔍
Cache ID: 216::103

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