Apple macOS/iOS/iPadOS/Safari Web Content use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.9$25k-$100k0.00

Summaryinfo

A vulnerability was found in Apple macOS, iOS, iPadOS and Safari and classified as critical. Impacted is an unknown function of the component Web Content Handler. The manipulation results in use after free. This vulnerability is cataloged as CVE-2023-43000. The attack may be launched remotely. Furthermore, there is an exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple macOS, iOS, iPadOS and Safari (the affected version is unknown). It has been classified as critical. Affected is an unknown code of the component Web Content Handler. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari 16.6, iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content may lead to memory corruption.

The advisory is available at support.apple.com. This vulnerability is traded as CVE-2023-43000 since 09/14/2023. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are unknown but an exploit is available. The structure of the vulnerability defines a possible price range of USD $25k-$100k at the moment (estimation calculated on 03/12/2026).

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 276570 (Linux Distros Unpatched Vulnerability : CVE-2023-43000), which helps to determine the existence of the flaw in a target environment. This issue was added on 03/05/2026 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 03/26/2026:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (276570) and CERT Bund (WID-SEC-2025-2657). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source WebKitGTK

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

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

NVD Base Score: 8.8
NVD Vector: 🔒

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: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Attacked

EPSS Score: 🔒
EPSS Percentile: 🔒

KEV Added: 🔒
KEV Due: 🔒
KEV Remediation: 🔒
KEV Ransomware: 🔒
KEV Notice: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 276570
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-43000

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/14/2023 CVE reserved
11/05/2025 +783 days Advisory disclosed
11/05/2025 +0 days VulDB entry created
03/12/2026 +127 days VulDB entry last update

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2023-43000 (🔒)
GCVE (CVE): GCVE-0-2023-43000
GCVE (VulDB): GCVE-100-331314
CERT Bund: WID-SEC-2025-2657 - WebKitGTK: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 11/05/2025 20:38
Updated: 03/12/2026 03:10
Changes: 11/05/2025 20:38 (55), 11/21/2025 11:35 (7), 11/23/2025 07:21 (2), 12/18/2025 16:01 (1), 01/06/2026 19:16 (1), 01/25/2026 03:30 (1), 02/12/2026 06:44 (2), 03/05/2026 21:25 (11), 03/05/2026 23:01 (13), 03/06/2026 15:31 (11), 03/12/2026 03:10 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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