EIP-2026-103705

PRE-CVE

WebKit - TypedArray.fill Memory Corruption

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103705. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit leverages a bug in JavaScriptCore's TypedArray.fill function to write to an absolute pointer by neutering the array during valueOf execution, potentially leading to arbitrary memory write on ARM and 32-bit platforms.

Description

WebKit - TypedArray.fill Memory Corruption

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · htmldosmultiple
https://www.exploit-db.com/exploits/40183

This exploit leverages a bug in JavaScriptCore's TypedArray.fill function to write to an absolute pointer by neutering the array during valueOf execution, potentially leading to arbitrary memory write on ARM and 32-bit platforms.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: WebKit/JavaScriptCore (Safari Technology Preview)
No auth needed
Prerequisites: Safari Technology Preview or WebKit with TypedArray.fill support
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026