CVE-2000-0567

Microsoft Outlook and Outlook Express - Remote Code Execution via Malformed Email Date Header

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2000-0567. PoCs published by Ussr Labs.

AI-analyzed exploit summary The writeup describes a buffer overflow vulnerability in Microsoft Outlook and Outlook Express due to improper bounds checking in the GMT section of the email date field. Exploiting this could allow arbitrary code execution when a malicious email is downloaded via POP3 or IMAP4.

Description

Buffer overflow in Microsoft Outlook and Outlook Express allows remote attackers to execute arbitrary commands via a long Date field in an email header, aka the "Malformed E-mail Header" vulnerability.

Exploits (2)

exploitdb WRITEUP VERIFIED
by Ussr Labs · textremotewindows
https://www.exploit-db.com/exploits/20079

The writeup describes a buffer overflow vulnerability in Microsoft Outlook and Outlook Express due to improper bounds checking in the GMT section of the email date field. Exploiting this could allow arbitrary code execution when a malicious email is downloaded via POP3 or IMAP4.

Classification
Writeup 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Theoretical
Target: Microsoft Outlook and Outlook Express (all versions)
No auth needed
Prerequisites: Ability to send a crafted email to the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by Ussr Labs · perlremotewindows
https://www.exploit-db.com/exploits/20078

This exploit targets a buffer overflow vulnerability in Microsoft Outlook and Outlook Express by sending a maliciously crafted email with an overly long GMT field in the date header. The exploit uses shellcode to achieve arbitrary code execution on the target system when the email is downloaded via POP3 or IMAP4.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Outlook and Outlook Express (all versions up to 2000)
No auth needed
Prerequisites: SMTP server access · Target email address
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/4953
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/1481

Scores

EPSS 0.3233
EPSS Percentile 98.1%

Details

Status published
Products (6)
microsoft/outlook 97
microsoft/outlook 98
microsoft/outlook 2000
microsoft/outlook_express 4.0
microsoft/outlook_express 4.01
microsoft/outlook_express 5.0
Published Jul 18, 2000
Tracked Since Feb 18, 2026