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Vulnerability record · CVE-2006-0911 · published 28 February 2006

CVE-2006-0911: Ipswitch whatsup vulnerability

Ipswitch · Whatsup

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.

5.0 CVSS 2.0 Medium EPSS 16% · top 3.2% CWE-399 · CWE-399
5.0CVSS 2.0 base score
16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 6 tagged exploit
16 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://securityreason.com/securityalert/472
http://www.osvdb.org/23494 Exploit
http://www.securityfocus.com/archive/1/425780/100/0/threaded
http://www.securityfocus.com/bid/16771 Exploit
http://www.vupen.com/english/advisories/2006/0704 Vendor Advisory
http://zur.homelinux.com/Advisories/ipswitch_dos.txt ExploitVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/24864
http://securityreason.com/securityalert/472
http://www.osvdb.org/23494 Exploit
http://www.securityfocus.com/archive/1/425780/100/0/threaded
http://www.securityfocus.com/bid/16771 Exploit
http://www.vupen.com/english/advisories/2006/0704 Vendor Advisory
http://zur.homelinux.com/Advisories/ipswitch_dos.txt ExploitVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/24864

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2006-0911), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.