The folks at F-Secure issued a bulletin today highlighting a buffer overflow in the web console feature of F-Secure Anti-Virus for Microsoft Exchange and F-Secure Internet Gatekeeper.  F-Secure rates this vulnerability as high in the cases where the web console is configured to only allow connections from localhost or specific trusted hosts and critical if configured to allow connections from all hosts.  They have released patches, the table below is taken directly from their advisory.

Patch availability:

Product	Versions	Hotfix ID	Download
F-Secure Anti-Virus for Microsoft Exchange	6.40	Apply hotfix for F-Secure Anti-Virus for Microsoft Exchange 6.40: ftp://ftp.f-secure.com/support/hotfix/fsav-mse/fsavmse640-05.zip
F-Secure Internet Gatekeeper	6.50	Upgrade to F-Secure Internet Gatekeeper 6.60 or Apply hotfix for the F-Secure Internet Gatekeeper 6.50: ftp://ftp.f-secure.com/support/hotfix/fsig/fsigk650-01.zip
F-Secure Internet Gatekeeper	6.42, 6.41, 6.40	Upgrade to F-Secure Internet Gatekeeper 6.60

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Jim Clausing, jclausing /at\ isc dot sans dot org