The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades.

The following packages are affected: firefox linux-firefox seamonkey linux-seamonkey CVE-2007-5959 Multiple unspecified vulnerabilities in Mozilla Firefox before 2.0.0.10 and SeaMonkey before 1.1.7 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unknown vectors that trigger memory corruption.