diff -up tigervnc-1.3.0/vncviewer/vncviewer.cxx.format-security tigervnc-1.3.0/vncviewer/vncviewer.cxx
--- tigervnc-1.3.0/vncviewer/vncviewer.cxx.format-security	2013-12-03 16:47:04.802800182 +0000
+++ tigervnc-1.3.0/vncviewer/vncviewer.cxx	2013-12-03 16:47:08.680820024 +0000
@@ -309,7 +309,7 @@ interpretViaParam(char *remoteHost, int
 
   snprintf(vncServerName, VNCSERVERNAMELEN, "localhost::%d", localPort);
   vncServerName[VNCSERVERNAMELEN - 1] = '\0';
-  vlog.error(vncServerName);
+  vlog.error("%s", vncServerName);
 
   return 0;
 }