EIP-2026-115868

PRE-CVE

Mozilla Thunderbird 2.0.0.23 Mozilla SeaMonkey 2.0 - 'jar50.dll' Null Pointer Dereference

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-115868. PoCs published by Marcin Ressel.

AI-analyzed exploit summary The exploit targets a vulnerability in jar50.dll used by Mozilla Thunderbird 2.0.0.23 and SeaMonkey 2.0. The crafted 'jar:' URI triggers a null pointer dereference, leading to a crash or potential code execution.

Description

Mozilla Thunderbird 2.0.0.23 Mozilla SeaMonkey 2.0 - 'jar50.dll' Null Pointer Dereference

Exploits (1)

exploitdb WORKING POC VERIFIED
by Marcin Ressel · textdoswindows
https://www.exploit-db.com/exploits/10103

The exploit targets a vulnerability in jar50.dll used by Mozilla Thunderbird 2.0.0.23 and SeaMonkey 2.0. The crafted 'jar:' URI triggers a null pointer dereference, leading to a crash or potential code execution.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Mozilla Thunderbird 2.0.0.23, Mozilla SeaMonkey 2.0
No auth needed
Prerequisites: Victim must open a malicious email or visit a crafted webpage
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026