CVE-2009-2435

Name: CVE-2009-2435
Creator: NVD / NIST
Published: 2009-07-13T14:30:00.217+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.06%

Last modified Jun 16, 2026

CVE-2009-2435 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.06% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.06%

60.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-255

Affected Software

Vendor	Product	Versions
Ibm	Lotus Instant Messaging And Web Conferencing	6.5.1

References

Timeline

Published: Jul 13, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-2435?

How severe is CVE-2009-2435?

Severity scoring for CVE-2009-2435 is pending analysis. The EPSS model estimates a 1.06% probability of exploitation in the next 30 days.

How do I fix CVE-2009-2435?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-2435?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST