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        Security Advisories, Responses and Notices
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Cisco IOS Software Releases 12.1 Special and Early Deployments

Security Advisories, Responses and Notices

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Cisco IOS Software Release 12.1(10)EV
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
Cisco IOS Software Release 12.1(10)EX
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
Cisco IOS Software Release 12.1(5)XM
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
- Cisco Security Advisory: Cisco IOS PPTP Vulnerability
  13/Sep/2001
Cisco IOS Software Release 12.1(5)XR
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(5)XU
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(5)XV
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
- Cisco Security Advisory: Cisco IOS PPTP Vulnerability
  13/Sep/2001
Cisco IOS Software Release 12.1(5)YA
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
- Cisco Security Advisory: Cisco IOS PPTP Vulnerability
  13/Sep/2001
Cisco IOS Software Release 12.1(5)YB
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
- Cisco Security Advisory: Cisco IOS PPTP Vulnerability
  13/Sep/2001
Cisco IOS Software Release 12.1(5)YC
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
- Cisco Security Advisory: Cisco IOS PPTP Vulnerability
  13/Sep/2001
Cisco IOS Software Release 12.1(5)YD
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
- Cisco Security Advisory: Cisco IOS PPTP Vulnerability
  13/Sep/2001
Cisco IOS Software Release 12.1(5)YE
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(5)YH
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(3)XG
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(3)XI
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(3)XJ
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(3)XL
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(3)XP
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(3)XQ
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(3)XT
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(2)XH
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(1)XA
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(1)XB
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Release 12.1(1)XC
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
Cisco IOS Software Releases 12.1 AA
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
Cisco IOS Software Releases 12.1 DA
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
Cisco IOS Software Releases 12.1 DB
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
Cisco IOS Software Releases 12.1 DC
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
Cisco IOS Software Releases 12.1 EC
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server
  03/May/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
Cisco IOS Software Releases 12.1 EX
- IOS Stack Group Bidding Protocol Crafted Packet DoS
  09/Aug/2006
- Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers
  04/Nov/2005
- Cisco Security Advisory: Cisco Telnet Denial of Service Vulnerability
  31/Dec/2004
- Cisco Security Notice: W32.BLASTER Worm Mitigation Recommendations
  19/Jul/2004
- Cisco Security Advisory: Cisco IOS Software Processing of SAA Packets
  12/Dec/2003
- Cisco Security Notice: Enumerating Locally Defined Users in Cisco IOS
  24/Jul/2003
- Cisco Security Advisory: MS SQL Worm Mitigation Recommendations
  13/Feb/2003
- Cisco Security Notice: Response to BugTraq - show Command Vulnerability
  09/May/2000
- Rootkits on Cisco IOS Devices
  23/Jun/2008
- Cisco Security Response: Cisco IOS Line Printer Daemon (LPD) Protocol Stack Overflow
  09/Oct/2007
- Cisco Security Advisory: Crafted ICMP Messages Can Cause Denial of Service
  27/Apr/2005