Apple Safari/tvOS/visionOS/watchOS/iOS/iPadOS up to 26.0 Web Content memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.0$25k-$100k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Apple Safari, tvOS, visionOS, watchOS, iOS and iPadOS up to 26.0. This vulnerability affects unknown code of the component Web Content Handler. This manipulation causes memory corruption. This vulnerability is handled as CVE-2025-43431. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple Safari, tvOS, visionOS, watchOS, iOS and iPadOS up to 26.0. It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component Web Content Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The issue was addressed with improved memory handling. This issue is fixed in tvOS 26.1, watchOS 26.1, macOS Tahoe 26.1, iOS 26.1 and iPadOS 26.1, Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, visionOS 26.1. Processing maliciously crafted web content may lead to memory corruption.

The advisory is shared at support.apple.com. This vulnerability is known as CVE-2025-43431 since 04/16/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $25k-$100k at the moment (estimation calculated on 12/18/2025).

The vulnerability scanner Nessus provides a plugin with the ID 276558 (Linux Distros Unpatched Vulnerability : CVE-2025-43431), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 26.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (276558) and CERT Bund (WID-SEC-2025-2480). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Apple Safari

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Memory corruption
CWE: CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 276558
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-43431

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Safari/tvOS/visionOS/watchOS/iOS/iPadOS 26.1

Timelineinfo

04/16/2025 CVE reserved
11/04/2025 +202 days Advisory disclosed
11/04/2025 +0 days VulDB entry created
12/18/2025 +44 days VulDB entry last update

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2025-43431 (🔒)
GCVE (CVE): GCVE-0-2025-43431
GCVE (VulDB): GCVE-100-331081
CERT Bund: WID-SEC-2025-2480 - Apple Safari: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 11/04/2025 08:03
Updated: 12/18/2025 05:07
Changes: 11/04/2025 08:03 (57), 11/04/2025 20:11 (7), 11/23/2025 08:52 (2), 12/01/2025 22:03 (1), 12/18/2025 05:07 (1)
Complete: 🔍
Cache ID: 216::103

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

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