This Week at CosmicBytez Labs
Welcome back! Issue #2 is packed with practical guides and security intelligence to keep you ahead of the curve.
Security Alert: Critical Vulnerabilities
D-Link Router RCE (CVE-2026-0625)
A critical remote code execution vulnerability affects D-Link DIR-series routers. Attackers can execute arbitrary commands without authentication via a crafted HTTP request to the management interface.
CVSS Score: 9.8 (Critical)
Affected Models:
- DIR-605L (all firmware versions)
- DIR-615 (firmware < 20.07)
- DIR-825 (firmware < 3.0.1)
Mitigation: D-Link has released firmware updates. If updates aren't available for your model, disable remote management immediately.
Cisco Webex Vulnerability
Cisco disclosed a high-severity vulnerability in Webex Meetings that allows authenticated users to escalate privileges and access other tenants' meeting data.
Action Required: Update Webex clients to the latest version.
New Project Guides
FortiGate SD-WAN Deployment
Enterprise SD-WAN with FortiGate featuring:
- Dual ISP failover and load balancing
- Performance SLAs with health checks
- Application-aware traffic steering
- ADVPN overlay for dynamic mesh VPN
- Zero Trust integration with ZTNA
This is a comprehensive guide covering everything from initial configuration to FortiManager integration for multi-site deployments.
Azure Sentinel SIEM Implementation
Deploy Microsoft Sentinel as your cloud-native SIEM with:
- Data connectors for Microsoft 365, Azure, and third-party sources
- Analytics rules aligned with MITRE ATT&CK
- Custom workbooks for security dashboards
- SOAR playbooks for automated response
New HOWTOs This Week
We've published 12 new tutorials covering everything from Intune Autopilot to incident response:
Microsoft Admin
- Intune Windows Autopilot Setup
- Conditional Access Zero Trust with Entra ID
- Defender for Endpoint Configuration
Security Operations
Kubernetes & DevOps
Cloud Infrastructure
Fortinet
RMM & Automation
KQL Query of the Week
Detect impossible travel scenarios in Azure AD:
let timeThreshold = 1h;
let distanceThreshold = 500; // km
SigninLogs
| where TimeGenerated > ago(7d)
| where ResultType == 0
| extend City = tostring(LocationDetails.city)
| extend Country = tostring(LocationDetails.countryOrRegion)
| extend Lat = toreal(LocationDetails.geoCoordinates.latitude)
| extend Lon = toreal(LocationDetails.geoCoordinates.longitude)
| sort by UserPrincipalName, TimeGenerated
| extend PrevLat = prev(Lat, 1), PrevLon = prev(Lon, 1), PrevTime = prev(TimeGenerated, 1)
| extend PrevUser = prev(UserPrincipalName, 1)
| where UserPrincipalName == PrevUser
| extend TimeDiff = datetime_diff('minute', TimeGenerated, PrevTime)
| extend Distance = geo_distance_2points(Lon, Lat, PrevLon, PrevLat) / 1000
| where TimeDiff < 60 and Distance > distanceThreshold
| project TimeGenerated, UserPrincipalName, City, Country, Distance, TimeDiffTool Spotlight: Trivy
Trivy is a comprehensive security scanner for containers, filesystems, and IaC:
# Scan container image
trivy image nginx:latest
# Scan Terraform files
trivy config --severity HIGH,CRITICAL ./terraform/
# Generate SBOM
trivy image --format spdx nginx:latest > sbom.jsonIntegrate with GitHub Actions:
- name: Run Trivy vulnerability scanner
uses: aquasecurity/trivy-action@master
with:
image-ref: '${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }}'
format: 'sarif'
output: 'trivy-results.sarif'
severity: 'CRITICAL,HIGH'Community Highlight
Special thanks to everyone who subscribed this week! Your feedback and engagement help shape the content we create.
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What's Coming Next Week
- SentinelOne deployment guide
- NinjaOne RMM platform setup
- Cove Data Protection implementation
- More security advisories
Stay secure!
Dylan H. CosmicBytez Labs