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Cisco Event Responses

Cisco Event Responses provide information about security events that have the potential for widespread impact on customer networks, applications, and devices.


Cisco Event Response: SYNful Knock Malware


On Tuesday, September 15th, Cisco and Mandiant/FireEye publicly disclosed information related to a type of persistent malware named SYNful Knock.

The Cisco Product Security Incident Response Team (PSIRT) worked with Mandiant and determined that no product vulnerabilities are used in this attack, and that an attacker requires valid administrative credentials or physical access to the device for a successful compromise.

Access a collection of resources to learn how to detect and mitigate the SYNful Knock attack.

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2014
Cisco Event Response: Microsoft Security Bulletin Release for December 2014
Cisco Event Response: Microsoft Security Bulletin Release for November 2014
Cisco Event Response: Microsoft Security Bulletin Release for October 2014
Cisco Event Response: September 2014 Semiannual Cisco IOS Software Security Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for September 2014
Cisco Event Response: Microsoft Security Bulletin Release for August 2014
Cisco Event Response: Microsoft Security Bulletin Release for July 2014
Cisco Event Response: Microsoft Security Bulletin Release for June 2014
Cisco Event Response: OpenSSL Vulnerabilities
Cisco Event Response: Microsoft Security Bulletin Release for May 2014
Cisco Event Response: Microsoft Security Bulletin Release for April 2014
Cisco Event Response: Microsoft Security Bulletin Release for March 2014
Cisco Event Response: March 2014 Semiannual Cisco IOS Software Security Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for February 2014
Cisco Event Response: OpenSSL Heartbleed Vulnerability CVE-2014-0160
Cisco Event Response: Microsoft Security Bulletin Release for January 2014

2013
Cisco Event Response: Microsoft Security Bulletin Release for December 2013
Cisco Event Response: Microsoft Security Bulletin Release for November 2013
Cisco Event Response: Microsoft Security Bulletin Release for October 2013
Cisco Event Response: September 2013 Semiannual Cisco IOS Software Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for September 2013
Cisco Event Response: Microsoft Security Bulletin Release for August 2013
Cisco Event Response: Microsoft Security Bulletin Release for July 2013
Cisco Event Response: Microsoft Security Bulletin Release for June 2013
Cisco Event Response: Microsoft Security Bulletin Release for May 2013
Cisco Event Response: Microsoft Security Bulletin Release for April 2013
Cisco Event Response: March 2013 Semiannual Cisco IOS Software Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for March 2013
Cisco Event Response: Microsoft Security Bulletin Release for February 2013
Cisco Event Response: Microsoft Security Bulletin Release for January 2013

2012
Cisco Event Response: Microsoft Security Bulletin Release for December 2012
Cisco Event Response: Microsoft Security Bulletin Release for November 2012
Cisco Event Response: Microsoft Security Bulletin Release for October 2012
Cisco Event Response: Oracle Security Alert for CVE-2012-4681
Cisco Event Response: Microsoft Security Bulletin Release for September 2012
Cisco Event Response: September 2012 Semiannual Cisco IOS Software Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for August 2012
Cisco Event Response: Microsoft Security Bulletin Release for July 2012
Cisco Event Response: Microsoft Security Bulletin Release for June 2012
Cisco Event Response: Microsoft Security Bulletin Release for May 2012
Cisco Event Response: Microsoft Security Bulletin Release for April 2012
Cisco Event Response: March 2012 Semiannual Cisco IOS Software Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for March 2012
Cisco Event Response: Microsoft Security Bulletin Release for February 2012
Cisco Event Response: Microsoft Security Bulletin Release for January 2012
Cisco Event Response: Distributed Denial of Service Attacks on Financial Institutions

2011
Cisco Event Response: Microsoft Security Bulletin Release for December 2011
Cisco Event Response: Microsoft Security Bulletin Release for November 2011
Cisco Event Response: Microsoft Security Bulletin Release for October 2011
Cisco Event Response: Microsoft Security Bulletin Release for September 2011
Cisco Event Response: September 2011 Semiannual Cisco IOS Software Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for August 2011
Cisco Event Response: Microsoft Security Bulletin Release for July 2011
Cisco Event Response: Microsoft Security Bulletin Release for June 2011
Cisco Event Response: Microsoft Security Bulletin Release for May 2011
Cisco Event Response: Microsoft Security Bulletin Release for April 2011
Cisco Event Response: Microsoft Security Bulletin Release for March 2011
Cisco Event Response: Microsoft Security Bulletin Release for February 2011
Cisco Event Response: Microsoft Security Bulletin Release for January 2011

2010
Cisco Event Response: Microsoft Security Bulletin Release for December 2010
Cisco Event Response: Microsoft Security Bulletin Release for November 2010
Cisco Event Response: Microsoft Security Bulletin Release for October 2010
Cisco Event Response: September 2010 Semiannual Cisco IOS Software Security Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for September 2010
Cisco Event Response: Microsoft Security Bulletin Release for August 2010
Cisco Event Response: Microsoft Security Bulletin Release for July 2010
Cisco Event Response: Microsoft Security Bulletin Release for June 2010
Cisco Event Response: Microsoft Security Bulletin Release for May 2010
Cisco Event Response: Microsoft Security Bulletin Release for April 2010
Cisco Event Response: March 2010 Semiannual Cisco IOS Software Security Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for March 2010
Cisco Event Response: Microsoft Security Bulletin Release for February 2010
Cisco Event Response: Microsoft Security Bulletin Release for January 2010

2009
Cisco Event Response: Microsoft Security Bulletin Release for December 2009
Cisco Event Response: Microsoft Security Bulletin Release for November 2009
Cisco Event Response: Microsoft Security Bulletin Release for October 2009
Cisco Event Response: Microsoft Out-of-Band Advisory for September 9, 2009
Cisco Event Response: September 2009 Semiannual Cisco IOS Software Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for September 2009
Cisco Event Response: Microsoft Security Bulletin Release for August 2009
Cisco Event Response: Microsoft Security Bulletin Release for July 2009
Cisco Event Response: Microsoft Security Bulletin Release for June 2009
Cisco Event Response: Microsoft Security Bulletin Release for May 2009
Cisco Event Response: Microsoft Security Bulletin Release for April 2009
Cisco Event Response: March 2009 Semiannual Cisco IOS Software Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for March 2009
Cisco Event Response: Microsoft Security Bulletin Release for February 2009
Cisco Event Response: Microsoft Security Bulletin Release for January 2009

2008
Cisco Event Response: Microsoft Security Bulletin Release for December 2008
Cisco Event Response: Microsoft Security Bulletin Release for November 2008
Cisco Event Response: Microsoft Security Bulletin Release for October 2008
Cisco Event Response: September 2008 Semiannual Cisco IOS Software Advisory Bundled Publication
Cisco Event Response: Microsoft Security Bulletin Release for September 2008
Cisco Event Response: Microsoft Security Bulletin Release for August 2008
Cisco Event Response: Microsoft Security Bulletin Release for July 2008
Cisco Event Response: Microsoft Security Bulletin Release for June 2008
Cisco Event Response: Microsoft Security Bulletin Release for May 2008
Cisco Event Response: Microsoft Security Bulletin Release for April 2008
Cisco Event Response: Microsoft Security Bulletin Release for March 2008
Cisco Event Response: Microsoft Security Bulletin Release for February 2008
Cisco Event Response: Microsoft Security Bulletin Release for January 2008

2007
Cisco Event Response: Microsoft Security Bulletin Release for December 2007
Cisco Event Response: Microsoft Security Bulletin Release for November 2007
Cisco Event Response: Microsoft Security Bulletin Release for October 2007
Cisco Event Response: Microsoft Security Bulletin Release for September 2007
Cisco Event Response: Microsoft Security Bulletin Release for August 2007
Cisco Event Response: Microsoft Security Bulletin Release for July 2007
Cisco Event Response: Microsoft Security Bulletin Release for June 2007