The remote host is missing an update to the system as announced in the referenced advisory.
The following package is affected: gnupg
CVE-2006-0455 gpgv in GnuPG 1.4.x before 1.4.2.1, when using unattended signature verification, returns a 0 exit code in certain cases even when the detached signature file does not carry a signature, which could cause programs that use gpgv to assume that the sigbnature verification has succeeded. Note: this also occurs when running the equivalent command 'gpg --verify'.
Solution: Update your system with the appropriate patches or software upgrades.