
CVE-2001-1097 – Cisco IOS 12 - UDP Denial of Service
https://notcve.org/view.php?id=CVE-2001-1097
24 Jul 2001 — Cisco routers and switches running IOS 12.0 through 12.2.1 allows a remote attacker to cause a denial of service via a flood of UDP packets. • https://www.exploit-db.com/exploits/21028 •

CVE-2001-0537 – Cisco IOS 11.x/12.x - HTTP Configuration Arbitrary Administrative Access
https://notcve.org/view.php?id=CVE-2001-0537
21 Jul 2001 — HTTP server for Cisco IOS 11.3 to 12.2 allows attackers to bypass authentication and execute arbitrary commands, when local authorization is being used, by specifying a high access level in the URL. • https://packetstorm.news/files/id/181081 • CWE-287: Improper Authentication •

CVE-2001-0288 – Linux Kernel 2.2 - Predictable TCP Initial Sequence Number
https://notcve.org/view.php?id=CVE-2001-0288
03 May 2001 — Cisco switches and routers running IOS 12.1 and earlier produce predictable TCP Initial Sequence Numbers (ISNs), which allows remote attackers to spoof or hijack TCP connections. • https://www.exploit-db.com/exploits/19522 •

CVE-2001-1434
https://notcve.org/view.php?id=CVE-2001-1434
28 Feb 2001 — Cisco IOS 12.0(5)XU through 12.1(2) allows remote attackers to read system administration and topology information via an "snmp-server host" command, which creates a readable "community" community string if one has not been previously created. • http://www.cisco.com/warp/public/707/ios-snmp-community-vulns-pub.shtml •

CVE-2000-0700
https://notcve.org/view.php?id=CVE-2000-0700
13 Oct 2000 — Cisco Gigabit Switch Routers (GSR) with Fast Ethernet / Gigabit Ethernet cards, from IOS versions 11.2(15)GS1A up to 11.2(19)GS0.2 and some versions of 12.0, do not properly handle line card failures, which allows remote attackers to bypass ACLs or force the interface to stop forwarding packets. • http://www.cisco.com/warp/public/707/gsraclbypassdos-pub.shtml •

CVE-2000-0345
https://notcve.org/view.php?id=CVE-2000-0345
03 May 2000 — The on-line help system options in Cisco routers allows non-privileged users without "enabled" access to obtain sensitive information via the show command. • http://www.securityfocus.com/bid/1161 •

CVE-2000-0380 – Cisco IOS 11.x/12.x - HTTP %%
https://notcve.org/view.php?id=CVE-2000-0380
26 Apr 2000 — The IOS HTTP service in Cisco routers and switches running IOS 11.1 through 12.1 allows remote attackers to cause a denial of service by requesting a URL that contains a %% string. • https://packetstorm.news/files/id/180482 • CWE-20: Improper Input Validation •

CVE-2000-0268
https://notcve.org/view.php?id=CVE-2000-0268
20 Apr 2000 — Cisco IOS 11.x and 12.x allows remote attackers to cause a denial of service by sending the ENVIRON option to the Telnet daemon before it is ready to accept it, which causes the system to reboot. • http://www.cisco.com/warp/public/707/iostelnetopt-pub.shtml •

CVE-1999-0445
https://notcve.org/view.php?id=CVE-1999-0445
01 Apr 1999 — In Cisco routers under some versions of IOS 12.0 running NAT, some packets may not be filtered by input access list filters. • http://www.osvdb.org/1104 •

CVE-1999-0063 – Cisco IOS 12.0.2 - Syslog Crash
https://notcve.org/view.php?id=CVE-1999-0063
11 Jan 1999 — Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port. • https://www.exploit-db.com/exploits/19531 •