CVE-1999-1497

Ipswitch IMail <6.0 - Info Disclosure

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-1999-1497. PoCs published by Adik, Mike Davis.

AI-analyzed exploit summary This exploit decrypts user passwords stored in the registry by IpSwitch IMail Server <= 8.1 using a weak polyalphabetic Vigenère cipher. It leverages the username as the decryption key to reverse the password hash.

Description

Ipswitch IMail 5.0 and 6.0 uses weak encryption to store passwords in registry keys, which allows local attackers to read passwords for e-mail accounts.

Exploits (2)

exploitdb WORKING POC VERIFIED
by Adik · clocalwindows
https://www.exploit-db.com/exploits/401

This exploit decrypts user passwords stored in the registry by IpSwitch IMail Server <= 8.1 using a weak polyalphabetic Vigenère cipher. It leverages the username as the decryption key to reverse the password hash.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: IpSwitch IMail Server <= 8.1
No auth needed
Prerequisites: Access to the target system's registry · Knowledge of the username and password hash
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by Mike Davis · clocalwindows
https://www.exploit-db.com/exploits/19683

This exploit decrypts weakly encrypted IMail passwords stored in the Windows registry by reversing a custom encryption scheme. It takes an account name and encrypted password as input and outputs the plaintext password.

Classification
Working Poc 100%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: Ipswitch IMail (versions prior to 6.01, unconfirmed)
No auth needed
Prerequisites: Access to the Windows registry key containing the encrypted password · Knowledge of the account name associated with the password
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Exploit, Vendor Advisory mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/39329
Exploit, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/880

Scores

EPSS 0.0140
EPSS Percentile 69.1%

Details

Status published
Products (6)
ipswitch/imail 5.0
ipswitch/imail 5.0.5
ipswitch/imail 5.0.6
ipswitch/imail 5.0.7
ipswitch/imail 5.0.8
ipswitch/imail 6.0
Published Dec 21, 1999
Tracked Since Feb 18, 2026