Security Advisory Desk
unratedQCS priority 70/100Cisco

Cisco Advance Notification for Publication of September 16, 2026, Security Advisories

Cisco will publicly release security advisories on September 16, 2026, detailing vulnerabilities and corresponding fixed software versions for several products, including Cisco Secure Firewall services. Customers are advised to upgrade to the new software versions once available to protect their systems from disclosed vulnerabilities.

Published 9/9/2026, 4:00:00 pmVerified 9/9/2026, 10:17:51 pmRevision 1
Cisco unrated network security advisory visual

In plain language

What this advisory means

Cisco will publicly release security advisories on September 16, 2026, detailing vulnerabilities and corresponding fixed software versions for several products, including Cisco Secure Firewall services. Customers are advised to upgrade to the new software versions once available to protect their systems from disclosed vulnerabilities.

Technical explanation

How the issue affects the environment

Cisco's Product Security Incident Response Team (PSIRT) is scheduled to disclose security vulnerabilities and release associated fixed software for multiple Cisco products, such as BroadWorks CommPilot, Identity Services Engine (ISE), Nexus Dashboard, Secure Firewall ASA, FMC, FTD, and ThousandEyes Virtual Appliance. The advisories will include security hardening updates. While no specific vulnerabilities, CVEs, or detailed mechanisms are provided upfront, the release is part of Cisco's ongoing risk-based disclosure process, advising customers to upgrade to mitigated software to address the forthcoming vulnerabilities.

Operational impact

Why teams should care

If customers do not upgrade to the fixed software releases after September 16, 2026, their Cisco products—particularly security-related services like the Secure Firewall family—may remain vulnerable to undisclosed security flaws. This could increase the risk of security incidents affecting network integrity, data confidentiality, and operational stability.

Immediate action

Customers should upgrade to the fixed software releases Cisco will provide in the security advisories published on September 16, 2026, to remediate the identified vulnerabilities.

Affected and fixed releases

Affected versionsConfirm in the official vendor advisory
Fixed versionsConfirm in the official vendor advisory

Temporary risk reduction

No workarounds are available according to the advisory; upgrading software is the recommended remediation step.

Evidence and validation checklist

  • Advance notification from Cisco PSIRT dated September 9, 2026, announcing upcoming advisories on September 16, 2026.
  • List of affected products including Cisco Secure Firewall ASA, FMC, FTD, and others.
  • Recommendation urging customers to upgrade to fixed software upon advisory publication.
  • Statement that no interim workarounds are available.

Authoritative reference

Cisco PSIRT Advisories

QCS detected and normalized this record from the official source. Vendor guidance remains authoritative.

Open source