EIP-2026-103788

PRE-CVE

Netscape Communicator 4.5 - prefs.js Buffer Overflow

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103788. PoCs published by Steve Fewer.

AI-analyzed exploit summary This exploit demonstrates a stack-based buffer overflow in Netscape Navigator 4.5 by injecting a malicious payload into the 'prefs.js' file. The overflow occurs when the 'network.proxy.http' field exceeds 80 bytes, allowing arbitrary code execution via overwritten EIP and EBP registers.

Description

Netscape Communicator 4.5 - prefs.js Buffer Overflow

Exploits (1)

exploitdb WORKING POC VERIFIED
by Steve Fewer · clocalmultiple
https://www.exploit-db.com/exploits/19692

This exploit demonstrates a stack-based buffer overflow in Netscape Navigator 4.5 by injecting a malicious payload into the 'prefs.js' file. The overflow occurs when the 'network.proxy.http' field exceeds 80 bytes, allowing arbitrary code execution via overwritten EIP and EBP registers.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Netscape Navigator 4.5
No auth needed
Prerequisites: Local access to modify the 'prefs.js' file · Netscape Navigator 4.5 installed on the target system
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026