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As previously discussed here on the Cisco Security blog, the Cisco Product Security Incident Response Team (PSIRT) follows a twice-per-year schedule for disclosing high-severity security vulnerabilities in Cisco IOS Software. The next Cisco IOS Software Security Advisory Bundle will be released on the 26th of September at 16:00 GMT. Our Security Vulnerability Policy describes the schedule best:

In direct response to customer feedback, Cisco releases bundles of Cisco IOS Software Security Advisories on the fourth Wednesday 16:00 GMT of the month in March and September of each calendar year. This schedule applies to the disclosure of Cisco IOS Software vulnerabilities and does not apply to the disclosure of vulnerabilities in other Cisco products.

We offer several convenient and timely ways to learn of new
Cisco Security Advisories and Cisco Security Advisory Bundles.

Regardless of which of the above tools you use to stay up-to-date with advisories as they’re released, and it is strongly recommended that you use one or more of them, you can always find all of the relevant security information by visiting the Cisco SIO Portal at

After the security advisories are published on the 26th, the Cisco IOS Software Checker can be used to help you determine whether or not the Cisco IOS Software versions in use in your network are vulnerable to the newly disclosed vulnerabilities. Until then, any time spent understanding the IOS versions and configurations deployed in your network is time very well spent.

On September 26th we will also be making a separate but very relevant announcement. I won’t steal the thunder of my friend Omar Santos, but let it suffice to say that that announcement will demonstrate Cisco’s continued commitment to machine readable security content and the work Omar, Mike Schiffman, and others have been doing within Cisco and in various industry forums. Be sure to check back here on 9/26!

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  1. Dr. Jose A. Wong - Perez

    Just waiting for the news to come…regards from Puerto Rico


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