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Security News — 17 October 2026

A daily, automatically-compiled digest of the cyber security stories that broke in the last 24 hours, drawn from 3 trusted feeds. Each entry is a short excerpt — follow the link to read the full article at its original publisher. Compiled 17 October 2026 · 6 items.

Top 5 to watch today

  1. CVE-2026-102764 — CRITICAL (CVSS 9.3) Critical · exploited CVEDatabase - Critical CVEs
  2. CVE-2026-111911 — CRITICAL (CVSS 9.3) Critical CVEDatabase - Critical CVEs
  3. Hackers breach Microsoft 365 tenants via ConnectWise supply-chain attack BleepingComputer
  4. MALFEX npm Package 'imgdecode' Hides Shellcode Loader in Windows Native Addon The Hacker News
  5. Hackers Use Compromised ConnectWise Credential to Sign In to 173 Microsoft 365 Tenants The Hacker News

Urgent Vulnerabilities 2

Actively exploited, critical, or high-severity flaws — patch or mitigate first.

CVEDatabase - Critical CVEs17 Oct

CVE-2026-102764 — CRITICAL (CVSS 9.3)

CriticalCVSS 9.3KEV · exploited
Exploited
Yes — CISA KEV
Product
BeyondTrust Remote Support
Impact
Authentication bypass
Action
Patch per vendor / CISA KEV

CVSS 9.3 CRITICAL · Vendor: beyondtrust The vulnerability exists within internal components of BeyondTrust’s Remote Support product. The components did not adequately validate the origin of the messages it received. Under the right conditi…

Read at source →
CVEDatabase - Critical CVEs17 Oct

CVE-2026-111911 — CRITICAL (CVSS 9.3)

CriticalCVSS 9.3
Impact
Authentication bypass
Audience
Linux/server admins
Action
Patch when a fix is available; monitor exposure

CVSS 9.3 CRITICAL phpMyFAQ 4.0.0 before 4.1.9 contains an authentication bypass vulnerability where WebAuthn registration endpoints attach credentials to any account without authentication or challenge validation. Attackers can stage a vic…

Read at source →

Threat Activity 1

Malware, campaigns and adversary tradecraft.

Breaches & Incidents 3

Ransomware, data breaches and supply-chain events.

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