Apple iOS/iPadOS Web denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.1$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Apple iOS and iPadOS. This affects an unknown part of the component Web Handler. The manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2025-43342. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Apple iOS and iPadOS (affected version unknown). This issue affects an unknown functionality of the component Web Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

A correctness issue was addressed with improved checks. This issue is fixed in Safari 26, tvOS 26, watchOS 26, iOS 26 and iPadOS 26, visionOS 26, iOS 18.7 and iPadOS 18.7. Processing maliciously crafted web content may lead to an unexpected process crash.

It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2025-43342 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. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/25/2026). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 265819 (Fedora 42 : webkitgtk (2025-fcc043d407)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (265819) and CERT Bund (WID-SEC-2025-2104). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IGEL OS
  • 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: 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: Denial of service
CWE: CWE-404
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: 265819
Nessus Name: Fedora 42 : webkitgtk (2025-fcc043d407)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/16/2025 CVE reserved
09/16/2025 +153 days Advisory disclosed
09/16/2025 +0 days VulDB entry created
01/25/2026 +131 days VulDB entry last update

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2025-43342 (🔒)
GCVE (CVE): GCVE-0-2025-43342
GCVE (VulDB): GCVE-100-324227
CERT Bund: WID-SEC-2025-2104 - WebKitGTK: Mehrere Schwachstellen

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

Entryinfo

Created: 09/16/2025 07:47
Updated: 01/25/2026 09:42
Changes: 09/16/2025 07:47 (55), 09/25/2025 16:44 (2), 10/06/2025 18:22 (7), 10/15/2025 23:54 (1), 10/28/2025 12:31 (1), 10/28/2025 16:42 (1), 11/20/2025 19:51 (1), 01/25/2026 09:42 (1)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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