CVE-2006-0911

CVE-2006-0911 is a medium-severity vulnerability in Ipswitch Whatsup with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 16% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-399.

Key facts

Description

NmService.exe in Ipswitch WhatsUp Professional 2006 allows remote attackers to cause a denial of service (CPU consumption) via crafted requests to Login.asp, possibly involving the (1) "In]" and (2) "b;tnLogIn" parameters, or (3) malformed btnLogIn parameters, possibly involving missing "[" (open bracket) or "[" (closing bracket) characters, as demonstrated by "&btnLogIn=[Log&In]=&" or "&b;tnLogIn=[Log&In]=&" in the URL. NOTE: due to the lack of diagnosis by the original researcher, the precise nature of the vulnerability is unclear.

Frequently asked questions

What is CVE-2006-0911?
NmService.exe in Ipswitch WhatsUp Professional 2006 allows remote attackers to cause a denial of service (CPU consumption) via crafted requests to Login.asp, possibly involving the (1) "In]" and (2) "b;tnLogIn" parameters, or (3) malformed btnLogIn parameters, possibly involving missing "[" (open bracket) or "[" (closing bracket) characters, as demonstrated by "&btnLogIn=[Log&In]=&" or "&b;tnLogIn=[Log&In]=&" in the URL. NOTE: due to the lack of diagnosis by the original researcher, the precise nature of the vulnerability is unclear.
How severe is CVE-2006-0911?
CVE-2006-0911 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-0911 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0911?
CVE-2006-0911 affects Ipswitch Whatsup. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-0911?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-0911 published?
CVE-2006-0911 was published on 2006-02-28 and last updated on 2026-06-16.

References

Affected products (1)

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