WebKitGTK/WPE WebKit up to 2.50.3 Web type confusion

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability was found in WebKitGTK and WPE WebKit up to 2.50.3. It has been classified as problematic. This affects an unknown function of the component Web Handler. The manipulation leads to type confusion. This vulnerability is documented as CVE-2025-43541. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in WebKitGTK and WPE WebKit up to 2.50.3. This issue affects an unknown code block of the component Web Handler. The manipulation with an unknown input leads to a type confusion vulnerability. Using CWE to declare the problem leads to CWE-843. The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. Impacted is availability. The summary by CVE is:

A type confusion issue was addressed with improved state handling. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, visionOS 26.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

The weakness was released by Hossein Lotfi. It is possible to read the advisory at seclists.org. The identification of this vulnerability is CVE-2025-43541. 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. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 279023 (Linux Distros Unpatched Vulnerability : CVE-2025-43541), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.50.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (279023) and CERT Bund (WID-SEC-2025-2891). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

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

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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: Type confusion
CWE: CWE-843
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: 279023
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-43541

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: WebKitGTK/WPE WebKit 2.50.4

Timelineinfo

12/17/2025 Advisory disclosed
12/17/2025 +0 days VulDB entry created
01/25/2026 +39 days VulDB entry last update

Sourcesinfo

Advisory: seclists.org
Researcher: Hossein Lotfi
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2025-43541 (🔒)
GCVE (CVE): GCVE-0-2025-43541
GCVE (VulDB): GCVE-100-336971
CERT Bund: WID-SEC-2025-2891 - WebKitGTK: Mehrere Schwachstellen ermöglichen Codeausführung und DoS

Entryinfo

Created: 12/17/2025 09:40
Updated: 01/25/2026 03:30
Changes: 12/17/2025 09:40 (53), 12/18/2025 07:18 (2), 12/20/2025 01:00 (7), 12/20/2025 09:46 (1), 01/04/2026 07:39 (1), 01/25/2026 03:30 (1)
Complete: 🔍
Cache ID: 216::103

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

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