In Xymon through 4.3.28, a buffer overflow exists in the status-log viewer CGI because of   expansion in appfeed.c.

In Xymon through 4.3.28, a stack-based buffer overflow exists in the status-log viewer component because of   expansion in svcstatus.c.

In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the history viewer component via a long hostname or service parameter to history.c.

In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of   expansion in acknowledge.c.

In Xymon through 4.3.28, a buffer overflow vulnerability exists in history.c.

In Xymon through 4.3.28, a buffer overflow vulnerability exists in reportlog.c.

In Xymon through 4.3.28, a buffer overflow vulnerability exists in the csvinfo CGI script. The overflow may be exploited by sending a crafted GET request that triggers an sprintf of the srcdb parameter.

In Xymon through 4.3.28, an XSS vulnerability exists in the csvinfo CGI script due to insufficient filtering of the db parameter.