Unspecified vulnerability in IBM WebSphere Application Server (WAS) 6.1 before 6.1.0.27 allows remote attackers to cause a denial of service via unknown vectors, related to "an error in fixpacks 6.1.0.23 and 6.1.0.25."
https://exchange.xforce.ibmcloud.com/vulnerabilities/53344
http://www.vupen.com/english/advisories/2009/2721