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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7.4$25k-$100k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Apple Safari, tvOS, visionOS, watchOS, iOS and iPadOS up to 26.0. Impacted is an unknown function of the component Web Content Handler. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2025-43433. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Apple Safari, tvOS, visionOS, watchOS, iOS and iPadOS up to 26.0. This affects an unknown code of the component Web Content Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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

It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2025-43433 since 04/16/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $25k-$100k at the moment (estimation calculated on 06/30/2026).

The vulnerability scanner Nessus provides a plugin with the ID 304374 (SUSE SLES12 Security Update : webkit2gtk3 (SUSE-SU-2026:1139-1)), 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 (304374) and CERT Bund (WID-SEC-2025-2480). Statistical analysis made it clear that VulDB provides the best quality for 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: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 8.8
ADP CISA Vector: 🔒

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: 304374
Nessus Name: SUSE SLES12 Security Update : webkit2gtk3 (SUSE-SU-2026:1139-1)

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
06/30/2026 +238 days VulDB entry last update

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2025-43433 (🔒)
GCVE (CVE): GCVE-0-2025-43433
GCVE (VulDB): GCVE-100-331083
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: 06/30/2026 06:35
Changes: 11/04/2025 08:03 (57), 11/04/2025 20:11 (7), 12/01/2025 22:03 (1), 12/18/2025 05:07 (1), 04/01/2026 01:31 (2), 06/30/2026 06:35 (13)
Complete: 🔍
Cache ID: 216::103

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

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