CVE-2001-1483: One-Time Passwords In Everything (a.k.a OPIE) 2.32 and 2.4 allows remote attackers to determine the existen...

Security readout for executives and security teams

This issue lets a remote party tell whether a username exists on systems using vulnerable OPIE one-time password software. It does not directly grant access, but it can help attackers build valid account lists for later phishing, credential, or access attempts. Exposure is likely limited to legacy systems still running OPIE 2.32 or 2.4, especially where OPIE-backed authentication is reachable remotely. The source bundle does not identify specific operating systems or packaged distributions. Treat this as a legacy exposure cleanup item unless OPIE is internet-facing or protects sensitive administrative access. Prioritize confirmation first because modern environments may not use OPIE at all. Mitigation focus: Inventory systems for OPIE 2.32 or 2.4 usage.; Check vendor or platform guidance for supported fixes or replacements.; Retire unsupported OPIE deployments where feasible..

Prepared

Jun 29, 2026, 20:09 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.