CVE-1999-0920

University of Washington IMAP - Buffer Overflow via POP-2D FOLD Command

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-1999-0920. PoCs published by Chris Evans, aushack, including Metasploit module auxiliary/admin/pop2/uw_fileretrieval.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in pop2d version 4.4 or earlier, allowing remote attackers to execute arbitrary code as the 'nobody' user via a crafted FOLD command. The exploit includes shellcode to spawn a shell and is designed to be used in conjunction with an IMAP server.

Description

Buffer overflow in the pop-2d POP daemon in the IMAP package allows remote attackers to gain privileges via the FOLD command.

Exploits (2)

exploitdb WORKING POC VERIFIED
by Chris Evans · cremotelinux
https://www.exploit-db.com/exploits/19226

This exploit targets a buffer overflow vulnerability in pop2d version 4.4 or earlier, allowing remote attackers to execute arbitrary code as the 'nobody' user via a crafted FOLD command. The exploit includes shellcode to spawn a shell and is designed to be used in conjunction with an IMAP server.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: pop2d version 4.4 or earlier
Auth required
Prerequisites: Access to an IMAP server · Valid user credentials for the IMAP server
devstral-2 · analyzed Feb 16, 2026 Full analysis →
metasploit WORKING POC
by aushack · rubypoc
https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/admin/pop2/uw_fileretrieval.rb

This Metasploit module exploits a vulnerability in the University of Washington ipop2d service (CVE-1999-0920) by abusing the FOLD command to retrieve arbitrary files readable by the POP account's user ID. It requires valid credentials and interacts with the POP2 protocol to fetch file contents.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: University of Washington ipop2d
Auth required
Prerequisites: Valid POP account credentials · Target file must be world or group readable by the POP account's user ID
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/283

Scores

EPSS 0.7354
EPSS Percentile 98.8%

Details

Status published
Products (2)
university_of_washington/imap 4.4
university_of_washington/pop2d
Published May 26, 1999
Tracked Since Feb 18, 2026