CVE-2009-2435
The Sametime server in IBM Lotus Instant Messaging and Web Conferencing 6.5.1 generates error...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2009-2435- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-255
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2009-2435- Updated
- 2026-11-02
EUVDEUVD-2009-2430 No score
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.
- Record
EUVD-2009-2430- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7926-wx9p-5h52 No score
The Sametime server in IBM Lotus Instant Messaging and Web Conferencing 6.5.1 generates error...
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.
- Record
GHSA-7926-wx9p-5h52- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-2435 is a medium vulnerability (CVSS 5.0) in Ibm Lotus Instant Messaging And Web Conferencing, published July 13, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.06%, the 64th percentile. No source names a fixed version.