Cyber Centre Daily Advisory Digest — 2026-04-27 (9 advisories)
The Canadian Centre for Cyber Security released a daily digest of nine security advisories covering critical vulnerabilities across enterprise software, Linux kernels, and industrial control systems (ICS). Organizations are urged to apply patches for affected products from vendors including IBM, Dell, Ubuntu, Red Hat, Moxa, VMware, Notepad++, and Microsoft to prevent potential exploitation.
Authors: Canadian Centre for Cyber Security
Detection / Hunter
What Happened
The Canadian Centre for Cyber Security published a summary of nine security alerts for various software and systems. These alerts affect a wide range of products, including everyday tools like Notepad++ and Microsoft Edge, as well as enterprise systems from IBM, Dell, and VMware. It also includes warnings for industrial control systems used in manufacturing and infrastructure. Applying these updates is crucial to protect systems from potential cyber attacks. System administrators and users should review the specific advisories and update their software immediately.
Key Takeaways
- Critical vulnerabilities were addressed in Broadcom VMware Tanzu products and Notepad++.
- Multiple Linux kernel vulnerabilities were patched across Ubuntu and Red Hat distributions.
- Numerous ICS/OT vulnerabilities were disclosed by CISA and Moxa, affecting Siemens, Silex, and other industrial equipment.
- Security updates were released for various enterprise products from IBM, Dell, and Microsoft Edge.
Affected Systems
- IBM Enterprise Products (DataStax, App Connect, Guardium, etc.)
- Dell Networking OS10, Storage, and VxRail
- Ubuntu Linux (18.04 LTS to 25.10)
- Red Hat Enterprise Linux and CodeReady
- Siemens, Silex, and other ICS devices (CISA Advisories)
- Moxa Control Systems (TN-4900, EDR, OnCell series)
- VMware Tanzu Data Lake and Greenplum
- Notepad++ (version 8.9.3 and prior)
- Microsoft Edge Stable Channel (prior to 147.0.3912.86)
Vulnerabilities (CVEs)
- CVE-2026-3867
- CVE-2026-3868
Attack Chain
The provided text is a digest of vulnerability advisories and does not detail a specific attack chain, malware execution, or threat actor campaign.
Detection Availability
- YARA Rules: No
- Sigma Rules: No
- Snort/Suricata Rules: No
- KQL Queries: No
- Splunk SPL Queries: No
- EQL Queries: No
- Other Detection Logic: No
No detection rules are provided; the article is a digest of vulnerability advisories.
Detection Engineering Assessment
EDR Visibility: None — The article discusses vulnerability patching and does not provide active exploitation details or behavioral indicators. Network Visibility: None — No network signatures or exploitation traffic patterns are detailed in the advisory digest. Detection Difficulty: N/A — This is a patch advisory digest, not a threat report detailing exploitable behaviors.
Required Log Sources
- Vulnerability Management System
- Patch Management Logs
Hunting Hypotheses
| Hypothesis | Telemetry | ATT&CK Stage | FP Risk |
|---|---|---|---|
| Search for unexpected child processes spawning from Notepad++ or Microsoft Edge, which may indicate successful exploitation of the mentioned vulnerabilities. | Process creation logs (e.g., Windows Event ID 4688 or Sysmon Event ID 1) | Execution | Medium |
Control Gaps
- Missing patches
- Vulnerability management delays
False Positive Assessment
- Low
Recommendations
Immediate Mitigation
- Review the provided advisory links for Broadcom VMware, Notepad++, and Microsoft Edge to apply critical updates.
- Identify and patch affected Linux kernel versions in Ubuntu and Red Hat environments.
Infrastructure Hardening
- Update firmware and software for Dell networking/storage and IBM enterprise products.
- Apply vendor-supplied mitigations and patches for CISA and Moxa ICS/OT devices.
User Protection
- Ensure Microsoft Edge and Notepad++ are updated to the latest versions on user endpoints.
Security Awareness
- Incorporate daily advisory digests into the organization's vulnerability management and patch prioritization workflows.