EIP-2026-103067

PRE-CVE

Asterisk 1.8.4.1 - SIP 'REGISTER' Request User Enumeration

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103067. PoCs published by Francesco Tornieri.

AI-analyzed exploit summary This exploit demonstrates a user-enumeration weakness in Asterisk by sending a malformed SIP REGISTER request. The issue allows an attacker to harvest valid usernames, aiding in brute-force attacks.

Description

Asterisk 1.8.4.1 - SIP 'REGISTER' Request User Enumeration

Exploits (1)

exploitdb WORKING POC VERIFIED
by Francesco Tornieri · textremotelinux
https://www.exploit-db.com/exploits/35801

This exploit demonstrates a user-enumeration weakness in Asterisk by sending a malformed SIP REGISTER request. The issue allows an attacker to harvest valid usernames, aiding in brute-force attacks.

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Asterisk 1.8.4.1
No auth needed
Prerequisites: Network access to the Asterisk SIP service
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026