The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

SEC-CONSULT Security Advisory < 20090305-1 > ========================================================================================= title: IBM Director CIM Server Remote Denial of Service Vulnerability program: IBM Director for Windows vulnerable version: <= 5.20.3 Service Update 2 homepage: http://www-03.ibm.com/systems/management/director/ found: Sept. 2008 by: Bernhard Mueller / SEC Consult Vulnerability Lab permanent link: http://www.sec-consult.com/files/20090305-1_IBM_director_DoS.txt ========================================================================================= Product description: --------------- IBM Director is an application that can track and view system configurations of remote computers. It is available for Linux, AIX, and Windows servers. Vulnerability overview: ---------------- The CIM server contained in the IBM Director suite for Microsoft Windows is vulnerable to a remote denial of service attack. The vulnerability allows an attacker to crash the service remotely. It will not be possible to reach the IBM Director agent until the service is manually restarted. Vulnerability details: --------------- CIM server crashes on receiving requests that contain overlong consumer names. The error condition does not allow for the redirection of program flow. M-POST /CIMListener/[Ax512] HTTP/1.1 CIMOperation: MethodCall CIMExport: MethodRequest CIMExportMethod: ExportIndication [some xml] Fix: --------------- The vendor has adressed this vulnerability in service update 2 for IBM Director agent 5.20.3. Download link: https://www14.software.ibm.com/webapp/iwm/web/reg/download.do?source=dmp&S_PKG=director_x_520&S_TACT=sms&lang=en_US&cp=UTF-8 vendor status: --------------- vendor notified: 2008-11-03 patch available: 2009-03-09 -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ SEC Consult Unternehmensberatung GmbH Office Vienna Mooslackengasse 17 A-1190 Vienna Austria Tel.: +43 / 1 / 890 30 43 - 0 Fax.: +43 / 1 / 890 30 43 - 25 Mail: research at sec-consult dot com www.sec-consult.com # EOF Bernhard Mueller, SEC Consult Vulnerability Lab / @2009 # milw0rm.com [2009-03-10]