CVE-1999-1100

High CVSS 7.5

Published 1999-12-31 · last changed 2026-06-16

The fix

We hold no Microsoft remediation data for CVE-1999-1100, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

Cisco PIX Private Link 4.1.6 and earlier does not properly process certain commands in the configuration file, which reduces the effective key length of the DES key to 48 bits instead of 56 bits, which makes it easier for an attacker to find the proper key via a brute force attack.

Sources

NVD record for CVE-1999-1100

CVSS vector: AV:N/AC:L/Au:N/C:P/I:P/A:P