CVE-1999-0989

Microsoft IE - Buffer Overflow

Title source: rule
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0989. PoCs published by Jeremy Kothe.

AI-analyzed exploit summary This exploit leverages a buffer overflow in Internet Explorer 5.0's handling of the 'vnd.ms.radio' URL scheme. By crafting a URL with 360+ characters, it overwrites a buffer in MSDXM.OCX, leading to arbitrary code execution. The provided binary payload triggers a MessageBox and enters an infinite loop.

Description

Buffer overflow in Internet Explorer 5 directshow filter (MSDXM.OCX) allows remote attackers to execute commands via the vnd.ms.radio protocol.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Jeremy Kothe · textlocalwindows
https://www.exploit-db.com/exploits/19665

This exploit leverages a buffer overflow in Internet Explorer 5.0's handling of the 'vnd.ms.radio' URL scheme. By crafting a URL with 360+ characters, it overwrites a buffer in MSDXM.OCX, leading to arbitrary code execution. The provided binary payload triggers a MessageBox and enters an infinite loop.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Internet Explorer 5.0 for Windows 95/98/NT 4
No auth needed
Prerequisites: Victim must open a malicious URL in Internet Explorer 5.0
mistral-large-3 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/861

Scores

EPSS 0.1194
EPSS Percentile 95.6%

Details

Status published
Products (2)
microsoft/ie 5
microsoft/ie 5.0 (2 CPE variants)
Published Dec 06, 1999
Tracked Since Feb 18, 2026