The "established" keyword in some Cisco IOS software allowed an attacker to bypass filtering.
https://www.cve.org/CVERecord?id=CVE-1999-0162
Source: Mitre, NVD
Published: 1998-09-01
Updated: 2022-08-17
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 9.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity: Critical
