It indicates a potentially malicious attempt to access dvwssr.dll.
There exist multiple vulnerabilities in the dvwssr.dll in Microsoft Visual Interdev and FrontPage that allow attackers to cause a denial of service, execute commands or download any .asp .asa source files via specially-crafted packets.
Any unprotected Microsoft FrontPage 98 Server Extensions for IIS or Microsoft InterDev 1.0 is vulnerable to the attack.
Attackers can cause DoS, execute commands, or obtain source files of .asp and .asa files on the victim system.
Apply appropriate patches from Microsoft and/or upgrade the program to the latest non-vulnerable version.