MSP Backup Compromise, Cisco Email Flaw, and the 1,414-Patch Month

On 14 October 2026, CISA added four vulnerabilities to its Known Exploited Vulnerabilities catalogue, three of which carry direct consequences for UK small businesses relying on managed service providers. The lead story concerns Ahsay Cloud Backup Server, where two chainable CVEs allowed attackers to bypass authentication and execute arbitrary commands on MSP backup infrastructure. Active exploitation began by 4 October, giving attackers a ten-day window before public disclosure. Cisco Secure Email Gateway also suffered a critical flaw allowing unauthenticated file writes to the underlying OS. Microsoft’s October 2026 Patch Tuesday crossed the four-digit threshold for the first time, releasing 1,414 patches in a single month. Four WordPress plugins require immediate attention for remote code execution and SQL injection flaws. This episode examines why backup infrastructure compromise is uniquely dangerous, what questions to ask your MSP this week, and how lack of visibility into third-party software creates material risk under UK GDPR. Corrine provides specific actions for businesses that outsource IT security and explains why documented MSP oversight is now a competitive differentiator in client security questionnaires.

Chapters

• Introduction Corrine opens with urgent news that MSP backup software may already be compromised. CISA added four vulnerabilities to its Known Exploited Vulnerabilities catalogue on 14 October 2026, with three carrying direct consequences for UK businesses using managed service providers.
• Ahsay Cloud Backup Server: The Compromise Your MSP May Not Know About Yet Two CVEs affecting Ahsay Cloud Backup Server allowed attackers to bypass authentication and execute arbitrary commands. Active exploitation began by 4 October, ten days before public disclosure. The vulnerabilities are chainable and target MSP backup infrastructure, with multiple organisations already compromised. Corrine explains why backup system compromise is uniquely dangerous and what questions to ask your MSP.
• Call to Action Corrine asks listeners to follow the show, leave reviews, and share the episode with business owners who outsource IT without understanding what software their MSP actually runs.
• Cisco Secure Email Gateway: No Login Required CVE-2026-76519 allows unauthenticated remote attackers to write arbitrary files to Cisco Secure Email Gateway appliances. The flaw affects devices specifically deployed to protect email and requires no credentials to exploit. Corrine discusses the pattern of perimeter security infrastructure becoming priority targets.
• October Patch Tuesday and the Volume Problem Microsoft’s October 2026 Patch Tuesday released 1,414 patches, the first time the monthly count crossed four digits. Kaspersky analysis confirms this as a milestone. Corrine examines whether MSPs can maintain adequate patching cadence as vulnerability volume accelerates.
• WordPress Plugins Under Active Threat Four critical WordPress plugin vulnerabilities require immediate action: Snazzy Social Media Feed, Abandoned Cart Pro for WooCommerce, AGE-GATE, and SimpleForm. Flaws include remote code execution, SQL injection, and privilege escalation, several requiring no authentication.
• Why This Gives You a Competitive Edge Corrine explains how documented MSP oversight creates competitive advantage in client security questionnaires. Under UK GDPR, businesses remain data controllers even when MSPs are processors, meaning liability for MSP infrastructure compromise flows upward. Specific visibility into MSP software inventory is a verifiable differentiator most competitors cannot provide.
• Conclusion Corrine provides specific questions to ask MSPs this week about Ahsay backup software, Cisco email gateway patching, and software inventory. She emphasises that these conversations require no budget, only the willingness to ask direct questions and expect direct answers.

Links

• https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• https://www.security.nl/
• https://nvd.nist.gov/
• https://www.kaspersky.com/