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Microsoft Patch Tuesday, September 2026 Security Update Review

Microsoft's September 2026 Patch Tuesday fixes 974 vulnerabilities, including 113 critical and two actively exploited Windows privilege escalation flaws.

Microsoft's September 2026 Patch Tuesday fixes 974 vulnerabilities, its largest release ever, including 113 critical and 860 important, covering Windows HTTP.sys, Hyper-V, Entra ID, Exchange Server, Office, DNS, and more. Two zero-days are confirmed exploited in the wild: CVE-2026-81963 (Windows Update Stack EoP) and CVE-2026-85880 (ALPC heap overflow), both letting authenticated attackers gain SYSTEM privileges. Notable criticals include an Entra ID authentication bypass (CVE-2026-62916) and multiple Windows DNS Server and Office remote code execution flaws.

Qualys ThreatPROTECTSep 9, 12:23 UTC · 7d agoVulnerability in the wildCVE-2026-81963 CVE-2026-85880 CVE-2026-58599+27 CVEs

The 3 most common post-compromise tactics on network infrastructure

Cisco TalosMar 7, 15:00 UTC · Mar 7, 2024Ransomware

From Coercion to Invasion: The Theory and Execution of China’s Cyber Activity in Cross-Strait Relations

Recorded FutureAug 22, 00:00 UTC · Aug 22, 2025Ransomware

Palo Alto Networks provides AI-powered security to 5G enterprise customers

Help Net SecurityMar 5, 09:03 UTC · Mar 5, 2025Exploit / PoC

A house full of open windows: Why telecoms may never purge their networks of Salt Typhoon

CyberScoopMay 21, 14:08 UTC · May 21, 2025Threat actor1

Leveraging mobile networks to threaten national security

Help Net SecurityFeb 28, 00:00 UTC · Feb 28, 2022Data breach

State-sponsored campaigns target global network infrastructure

Cisco TalosApr 18, 15:02 UTC · Apr 18, 2023Threat actor CVE-2017-6742

How to Bring Zero Trust to Wi-Fi Security with a Cloud

The Hacker NewsJan 17, 14:13 UTC · Jan 17, 2025Ransomware

Chinese Hackers Rely on Covert Proxy Networks to Evade Detection

Infosecurity MagazineMay 22, 15:45 UTC · May 22, 2024Exploit / PoC

Threats posed by using RATs in ICS

Kaspersky SecurelistSep 20, 10:00 UTC · Sep 20, 2018Exploit / PoC

Correct bad network behavior to bolster application experience

Help Net SecurityDec 18, 00:00 UTC · Dec 18, 2023Exploit / PoC

An executive perspective: The evolution of security and networking

CyberScoopSep 16, 20:30 UTC · Sep 16, 2020Exploit / PoC

Network detection and response in the modern era

Help Net SecurityNov 5, 11:14 UTC · Nov 5, 2025Ransomware

Edgecore Networks and Wedge Networks partner to offer next-generation network security

Help Net SecurityMay 5, 00:00 UTC · May 5, 2023Ransomware

Personal VPN and Its Evasions: Risk Factors and How to Maintain Network Visibility

Palo Alto Unit 42Jun 6, 12:16 UTC · Jun 6, 2024Vulnerability CVE-2020-15590 CVE-2019-12579 CVE-2019-12578+23 CVEs

RedMike Cyber Attack on Cisco Devices in Telecommunications

Recorded FutureDec 4, 00:00 UTC · Dec 4, 2024Vulnerability CVE-2023-20198 CVE-2023-20273

FortiOS 7.2 enables organizations to protect their hybrid networks

Help Net SecurityApr 5, 00:00 UTC · Apr 5, 2022Ransomware

Keys to the Kingdom: Erlang/OTP SSH Vulnerability Analysis and Exploits Observed in the Wild

Attackers actively exploit CVE-2025-32433, a CVSS 10.0 unauthenticated RCE in Erlang/OTP SSH, heavily targeting OT and critical infrastructure networks.

CVE-2025-32433 enables unauthenticated RCE in Erlang/OTP's SSH daemon via SSH connection protocol messages (codes >= 80) processed before authentication, affecting versions before OTP-27.3.3, OTP-26.2.5.11 and OTP-25.3.2.20. Unit 42 recorded a spike in exploitation between May 1-9, 2025, with 70% of detections on firewalls protecting OT networks, disproportionately affecting healthcare, agriculture, media and high technology. Observed payloads bind TCP-connected shells or launch Bash reverse shells to hosts like 146.103.40.203:6667, with randomized DNS lookups under dns.outbound.watchtowr.com indicating OAST-driven blind RCE validation.

Palo Alto Unit 42Aug 17, 13:03 UTC · Aug 17, 2026Exploit / PoC in the wildCVE-2025-32433