EIP-2026-103555

PRE-CVE

Mozilla Browser 1.7.x - Non-ASCII Hostname Heap Overflow

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103555. PoCs published by Mats Palmgren & Gael Delalleau.

AI-analyzed exploit summary This exploit demonstrates a heap overflow vulnerability in Mozilla browsers when processing non-ASCII characters in URIs. The crafted URIs can trigger arbitrary code execution by exploiting the overflow condition.

Description

Mozilla Browser 1.7.x - Non-ASCII Hostname Heap Overflow

Exploits (1)

exploitdb WORKING POC VERIFIED
by Mats Palmgren & Gael Delalleau · textdosmultiple
https://www.exploit-db.com/exploits/24597

This exploit demonstrates a heap overflow vulnerability in Mozilla browsers when processing non-ASCII characters in URIs. The crafted URIs can trigger arbitrary code execution by exploiting the overflow condition.

Classification
Working Poc 80%
Attack Type
Rce
Complexity
Moderate
Reliability
Theoretical
Target: Mozilla browsers (unspecified version)
No auth needed
Prerequisites: User interaction required to visit a malicious URI
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026