August updates trigger 0xc0000409 errors on Windows Server 2016

Microsoft says the August 2026 security update may trigger 0xc0000409 errors on Windows Server 2016 systems where the Compatibility Appraiser diagnostic service is enabled. On affected systems, users will see the CompatTelRunner.exe (Compatibility Appraiser Telemetry Runner) process crashing. Microsoft Compatibility Appraiser, which controls CompatTelRunner and is a Windows Compatibility Telemetry component, is a background system […]

SAP warns of maximum severity ‘OVERPASS’ kernel vulnerability

SAP has addressed 20 vulnerabilities across multiple products in its September 2026 security updates, including a maximum-severity memory corruption flaw in the SAP Kernel code. Tracked as CVE-2026-44756 and dubbed OVERPASS by Onapsis security researchers who reported it, the vulnerability stems from a classic buffer overflow weakness in the Extended Passport Protocol (EPP) processing library. […]

OpenAI says GPT-6 Astra can find zero-days, but is also harder to monitor

OpenAI confirmed that GPT-6 Astra is the first model it has broadly deployed to reach the “Critical level” for cybersecurity capabilities. This is part of the company’s Preparedness Framework for cybersecurity and is evaluated when OpenAI releases more capable models. Under OpenAI’s own framework, a model reaches the Critical cybersecurity threshold if it can “identify […]

BigBear Microsoft 365 phishing service bypassed MFA at 258 organizations

A phishing-as-a-service framework called BigBear 2.0 has been used to bypass multi-factor authentication at 258 organizations and steal more than 5,000 Microsoft 365 credentials. Researchers at cybersecurity company CloudSEK gained administrator access to the control panel and found that the service managed 42 VPS nodes, all configured to target Microsoft 365 as part of the […]