It indicates an attempt to gain Administrator access to News Manager Lite. News Manager Lite is a news management program for web sites. It runs on Microsoft Windows platforms and it is built in ASP. A vulnerability exists which could allow attackers to gain administrator access by setting the Admin parameter in the NEWS_LOGIN cookie.
Expinion.net News Manager Lite 2.5.
Upgrade to Expinion.net News Manager Lite 2.6 or later.