| Package | Affected versions | Patched versions |
|---|---|---|
| personal firewall | = 4.0.10= 4.0.16= 4.0.6= 4.0.7= 4.0.8= 4.0.9= 4.1= 4.1.1 |
The FWDRV.SYS driver in Kerio Personal Firewall 4.1.1 and earlier allows remote attackers to cause a denial of service (CPU consumption and system freeze from infinite loop) via a (1) TCP, (2) UDP, or (3) ICMP packet with a zero length IP Option field.
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