CVE-2005-1618

Yahoo Messenger 5.x-6.0 - Denial of Service via Malformed Room Request Packet

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2005-1618. PoCs published by Torseq Tech.

AI-analyzed exploit summary This exploit leverages a denial-of-service vulnerability in Yahoo! Messenger by crafting malicious YMSGR protocol URIs. Clicking the provided links causes the application to disconnect due to improper handling of exceptional conditions.

Description

The YMSGR URL handler in Yahoo! Messenger 5.x through 6.0 allows remote attackers to cause a denial of service (disconnect) via a room login or a room join request packet with a third : (colon) and an & (ampersand), which causes Messenger to send a corrupted packet to the server, which triggers a disconnect from the server.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Torseq Tech · textdoswindows
https://www.exploit-db.com/exploits/25658

This exploit leverages a denial-of-service vulnerability in Yahoo! Messenger by crafting malicious YMSGR protocol URIs. Clicking the provided links causes the application to disconnect due to improper handling of exceptional conditions.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Yahoo! Messenger 5.x to 6.0 Windows
No auth needed
Prerequisites: Victim interaction (clicking a malicious link)
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=111601904204055&w=2
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/13626
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/16816

Scores

EPSS 0.0316
EPSS Percentile 86.5%

Details

Status published
Products (3)
yahoo/messenger 5.5
yahoo/messenger 5.6
yahoo/messenger 6.0
Published May 16, 2005
Tracked Since Feb 18, 2026