cisco-sa-notice-QGwHnJ6k: Cisco Advance Notification for Publication of October 21, 2026, Security Advisories
On October 21, 2026, the Cisco Product Security Incident Response Team (PSIRT) will publish advisories to disclose security vulnerability information along with fixed software releases for the following Cisco products:Expressway Series (security hardening release)IOS XR Software for ASR 9000 Series RoutersSecure ClientSnort (security hardening release)Unified Communications products (security hardening release)To remediate vulnerabilities to be disclosed on October 21, 2026, Cisco strongly recommends that customers upgrade to the fixed software indicated in the advisories.For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the Foundation: A Predictable, Customer-Focused Response to AI-Accelerated Vulnerability Discovery.
Affected Software
Event History
Frequently Asked Questions
When will fixed software information be available?
Cisco PSIRT is scheduled to publish the security advisories and associated fixed software releases on October 21, 2026.
Which environments should be reviewed when the advisories are released?
Review deployments of Cisco Expressway Series, IOS XR Software on ASR 9000 Series Routers, Cisco Secure Client, Cisco Snort, and Cisco Unified Communications products. The notice identifies Expressway, Snort, and Unified Communications products as receiving security hardening releases.
What should organizations do now if they use one of the listed products?
Prepare to review the October 21, 2026 advisories and compare deployed software with the fixed releases identified there. Cisco recommends upgrading to the fixed software specified in those advisories.