The flaws--found by security firm Internet Security Systems (ISS)--may give intruders access to corporate networks through the devices designed to keep attackers out.

"Really controlling the firewall is controlling the gatekeeper for the network," said Dan Ingevaldson, director of vulnerability researcher and development for ISS. "If (an attacker) can control all the data going in and out--really, the game is over at that point."

Check Point released a patch for its latest line of firewalls, the NG, or Next Generation series. The patch corrects a flaw in the way the software inspects Web data passing through the device. The second flaw affects the company's earlier virtual private network product, VPN-1, and won't be fixed, as Check Point no longer supports the software.

By Robert Lemos at CNET.

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