Apple iOS/iPadOS/macOS/tvOS/visionOS/watchOS up to 26.5 out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.4$5k-$25k1.37

Summaryinfo

A vulnerability classified as problematic was found in Apple iOS, iPadOS, macOS, tvOS, visionOS and watchOS up to 26.5. This issue affects some unknown processing. Such manipulation leads to out-of-bounds write. This vulnerability is traded as CVE-2026-43816. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Apple iOS, iPadOS, macOS, tvOS, visionOS and watchOS up to 26.5 and classified as problematic. Affected by this issue is an unknown function. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is integrity, and availability. CVE summarizes:

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to cause unexpected system termination.

The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2026-43816 since 05/02/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. 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 07/28/2026).

Upgrading to version 26.6 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.4

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: iOS/iPadOS/macOS/tvOS/visionOS/watchOS 26.6

Timelineinfo

05/02/2026 CVE reserved
07/27/2026 +86 days VulDB entry created
07/28/2026 +0 days Advisory disclosed
07/28/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2026-43816 (🔒)
GCVE (CVE): GCVE-0-2026-43816
GCVE (VulDB): GCVE-100-383684
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 07/28/2026 00:44
Changes: 07/28/2026 00:44 (55)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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