PatchGap
WebKit · WebKit

CVE-2025-43433

Logic Error in WebKit
Medium CVSS 8.8 webkit Logic Error

Overview

Medium
Severity
8.8
CVSS
No
Exploited ITW
Embargoed
Fix Status
DescriptionProcessing maliciously crafted web content may lead to memory corruption
ComponentWebKit
Bug ClassLogic Error
Tracker298093
CWECWE-787, CWE-119, CWE-120 (Out-of-bounds write, Buffer bounds error, Buffer overflow)
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA KEVNot listed
CreditedGoogle Big Sleep
Disclosed2025-11-03

Fix not yet public

No public source fix for this bug has been identified on the main branch yet — it is embargoed or not yet disclosed. Root-cause analysis is withheld until the fix commit is available.

Vendor advisory note

No root-cause analysis yet: the upstream bug is still restricted, so there is no public fix commit to analyze. The vendor's advisory describes the fix only as:

The issue was addressed with improved memory handling.

Original Bug Report

The reporter's bug is still restricted on the tracker.
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