Severity: HighAction: Patch

Cisco, WatchGuard Release Patches; SonicWall Won’t Fix GMS Flaws

Cisco patched an RCE in UCS Central Software; WatchGuard fixed authentication and MitM flaws.

Excerpt from the primary source: SecurityWeek

Who is affected

Small businesses · Enterprises

Affected technology: Cisco networking & security, SonicWall firewalls & SMA

What you should do · Patch

Apply the vendor's security update for SonicWall firewalls & SMA and Cisco networking & security. Check the linked advisory for affected and fixed versions, and put internet-facing systems first.

Automated guidance based on this story's classification. Check the linked advisories for specifics.

Sources

We link to original and authoritative sources. Headlines and excerpts belong to their publishers.

Original reporting

Cisco, WatchGuard Release Patches; SonicWall Won’t Fix GMS Flaws SecurityWeek · securityweek.com · Nov 5, 2026 · Primary source
Severity: CriticalAction: Act nowExploitation: Exploited

New Cisco firewall zero-day exploited to crash SSL VPN devices

Cisco released security updates to patch a denial-of-service zero-day in Adaptive Security Appliance (ASA) and Threat Defense (FTD) software that attackers are exploiting to remotely crash vulnerable firewall devices.

Why it matters

Source reporting says attackers are already exploiting this, so exposed Cisco networking & security systems are at immediate risk.

Act now

Treat this as an emergency.