Apple Safari/visionOS/watchOS/iOS/iPadOS up to 26.0 Web Content use after free

CVSS Meta Temp Score
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CTI Interest Score
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4.2$5k-$25k0.00

Summaryinfo

A vulnerability classified as critical has been found in Apple Safari, visionOS, watchOS, iOS and iPadOS up to 26.0. The impacted element is an unknown function of the component Web Content Handler. The manipulation leads to use after free. This vulnerability is referenced as CVE-2025-43438. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apple Safari, visionOS, watchOS, iOS and iPadOS up to 26.0. This issue affects some unknown processing of the component Web Content Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is availability. The summary by CVE is:

A use-after-free issue was addressed with improved memory management. 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, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.

The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2025-43438 since 04/16/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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 $5k-$25k at the moment (estimation calculated on 06/30/2026).

The vulnerability scanner Nessus provides a plugin with the ID 303074 (Linux Distros Unpatched Vulnerability : CVE-2025-43438), 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 (303074), EUVD (EUVD-2025-37676) and CERT Bund (WID-SEC-2025-2480). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 4.3
VulDB Meta Temp Score: 4.2

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

ADP CISA Base Score: 4.3
ADP CISA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / 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: 303074
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-43438

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Safari/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-2025-43438 (🔒)
GCVE (CVE): GCVE-0-2025-43438
GCVE (VulDB): GCVE-100-331085
EUVD: 🔒
CERT Bund: WID-SEC-2025-2480 - Apple Safari: Mehrere Schwachstellen

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

Entryinfo

Created: 11/04/2025 08:05
Updated: 06/30/2026 06:35
Changes: 11/04/2025 08:05 (57), 11/04/2025 20:11 (7), 11/15/2025 23:00 (1), 12/18/2025 06:48 (1), 03/24/2026 16:58 (2), 06/30/2026 06:35 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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