Firewall Technical IT InsightsIn September 2026, the Canadian Centre for Cyber Security published a cluster of alerts about...
In September 2026, the Canadian Centre for Cyber Security published a cluster of alerts about vulnerabilities in three different security products: a Forcepoint firewall platform, an F5 remote-access gateway, and Cisco's identity and access-control system. These are separate products with separate jobs, made by separate vendors. What connects them is their position in the network. Each one sits in a trusted spot, deciding what traffic is allowed, who gets access, and which devices are recognized.
These alerts do not describe every threat facing Canadian businesses, and three advisories do not prove that attacks are becoming more advanced. What they do illustrate is a strategy worth understanding: attackers look for weaknesses in the very systems organizations rely on to enforce security. Even if your business does not use these particular products, it likely depends on tools that perform at least some of the same jobs, so the broader lesson still applies.
The Short Version: Firewalls, access gateways, and identity platforms are built to protect business networks, but they are also complex software that needs maintenance. When a vulnerability appears, businesses need to identify affected products, apply the vendor's updates, check for signs of compromise, and confirm that their other security layers are still in place.
Security systems are appealing targets for a simple reason: they hold a trusted, high-leverage position. A weakness in one of them can give an attacker more than a single foothold.
Depending on the product and how it is exploited, a successful attacker might be able to:
Put simply, instead of trying every locked door, an attacker may look for a weakness in the system that controls the locks. This does not mean every vulnerability leads to a full breach. The real impact depends on the product, its configuration, how exposed it is, and whether the weakness is actually exploited.
The Forcepoint alert describes a security-policy bypass, meaning traffic that a firewall rule should stop might get through under certain conditions. The Cyber Centre lists the affected Forcepoint Security Engine versions and advises applying updates as they become available.
The Cyber Centre alert does not identify confirmed active exploitation, but affected organizations should still review their versions and apply Forcepoint’s fixes.
F5 BIG-IP APM acts as a gateway for remote and application access. This flaw only affects systems configured a specific way, with both an APM access policy and an OAuth profile on the same virtual server. On those systems, specially crafted traffic could let an unauthenticated attacker, meaning someone without a valid login, run their own code and potentially take over the device. F5 has reported that this vulnerability is being exploited in the wild, so affected organizations should treat it as urgent.
Cisco ISE helps decide which users and devices are trusted on a network. The three flaws could allow authentication bypass, administrative access, exposure of sensitive data, and configuration changes. Cisco has confirmed that one of them, CVE-2026-76460, is being actively exploited. Cisco states there are no workarounds that fully resolve the issues, so installing the fixed software is required.
Reputable vendors regularly find and correct vulnerabilities in their products. That is a normal part of maintaining complex software, not a sign that the products are poor. The risk shows up when no one is clearly responsible for the ongoing work these tools require.
In many businesses, it is unclear who owns:
Key Takeaway: A security product can watch the network, but someone still needs to watch the security product.
When an actively exploited vulnerability affects your environment, installing the update is necessary but may not be the end of it. A patch closes a known weakness. It does not tell you whether someone already used that weakness before you patched.
If active exploitation has occurred, logs, accounts, policies, configurations, and API activity may need review. In some cases, as the Cyber Centre advises for the Cisco vulnerabilities, suspected compromise may require affected nodes to be reimaged and restored from known-good backups, because an attacker with elevated access may have removed evidence of their activity. Any update should be followed by a check that it actually took effect, and if there are signs of a problem, a proper incident investigation.
Patching vs. Investigation: Patching fixes the vulnerable software. Investigation looks for evidence that someone may have used the vulnerability before it was fixed. Serious, actively exploited flaws can call for both.
This is useful even if you do not use Forcepoint, F5, or Cisco ISE, because the same questions apply to whatever firewalls, gateways, and access controls you do run.
Pro Tip: If your business cannot quickly say which firewall, VPN, or access-control version it runs, close that visibility gap before the next urgent advisory arrives. You cannot patch or defend what you have not inventoried.
For many small and medium businesses, the challenge is not buying another security product. It is making sure the tools already in place are current, correctly configured, and actively watched. That is ongoing work, and it is often the first thing to slip when a small team is busy.
This is one of the roles a managed IT and cybersecurity partner can fill: maintaining a current technology inventory, following relevant advisories, separating the alerts that affect your environment from those that do not, applying updates safely, reviewing configurations and management access, monitoring for suspicious activity, and investigating when something looks wrong. Firewall Technical provides this kind of managed IT and cybersecurity support to Ottawa businesses, helping them keep their networks and security systems current and respond when an advisory calls for action.
Security products remain necessary, and well-known vendors are not immune to vulnerabilities. What turns an installed product into an actively managed security control is the maintenance and monitoring behind it. Every business should be able to answer one simple question: who is watching the tools that watch your network?
If you are not sure who is monitoring your firewall, remote-access tools, or other critical security systems, call Firewall Technical at 613-288-5805. A short review can clarify what is in place, who is maintaining it, and where more attention may be needed.
Citations:
- Forcepoint security advisory (AV26-960), Canadian Centre for Cyber Security
- Vulnerability impacting F5 BIG-IP Access Policy Manager, CVE-2026-94127 (AL26-022), Canadian Centre for Cyber Security
- Vulnerabilities impacting Cisco Identity Services Engine, CVE-2026-20192, CVE-2026-76423, CVE-2026-76460 (AL26-021), Canadian Centre for Cyber Security
- Cisco Identity Services Engine Hardening Release: September 2026, Cisco (supporting advisory)