Apple macOS/visionOS/watchOS/iOS/iPadOS up to 26.0 denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Apple macOS, visionOS, watchOS, iOS and iPadOS up to 26.0. This impacts an unknown function. The manipulation leads to denial of service. This vulnerability is listed as CVE-2025-43494. The attack must be carried out locally. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Apple macOS, visionOS, watchOS, iOS and iPadOS up to 26.0. This issue affects an unknown functionality. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

A mail header parsing issue was addressed with improved checks. This issue is fixed in watchOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, macOS Tahoe 26.1, visionOS 26.1, macOS Sonoma 14.8.2, macOS Sequoia 15.7.2, iOS 26.1 and iPadOS 26.1. An attacker may be able to cause a persistent denial-of-service.

It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2025-43494 since 04/16/2025. The exploitation is known to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/15/2025).

Upgrading to version 26.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-203160). Statistical analysis made it clear that VulDB provides the best quality 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: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

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: 🔒

Upgrade: macOS/visionOS/watchOS/iOS/iPadOS 26.1

Timelineinfo

04/16/2025 CVE reserved
12/12/2025 +240 days Advisory disclosed
12/12/2025 +0 days VulDB entry created
12/15/2025 +3 days VulDB entry last update

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2025-43494 (🔒)
GCVE (CVE): GCVE-0-2025-43494
GCVE (VulDB): GCVE-100-336323
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 12/12/2025 22:32
Updated: 12/15/2025 17:52
Changes: 12/12/2025 22:32 (56), 12/13/2025 17:21 (2), 12/15/2025 17:52 (1)
Complete: 🔍
Cache ID: 216:BB8:103

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

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