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Zephyr RTOS fixes Bluetooth bugs that may lead to code execution

The Zephyr real-time operating system (RTOS) for embedded devices received an update earlier this month that fixes multiple vulnerabilities that can cause a denial-of-service (DoS) condition and potentially lead to remote code execution. [...]

https://www.bleepingcomputer.com/news/security/zephyr-rtos-fixes-bluetooth-bugs-that-may-lead-to-code-execution/
SonicWall bug that affected 800K firewalls was only partially fixed

New findings have emerged that shed light on a critical SonicWall vulnerability disclosed last year, which affected over 800,000 VPN firewalls and was initially thought to have been patched. Tracked as CVE-2020-5135, when exploited, the bug allows unauthenticated remote attackers to execute arbitrary code on the impacted devices. [...]

https://www.bleepingcomputer.com/news/security/sonicwall-bug-that-affected-800k-firewalls-was-only-partially-fixed/
PYSA ransomware backdoors education orgs using ChaChi malware

The PYSA ransomware gang has been using a remote access Trojan (RAT) dubbed ChaChi to backdoor the systems of healthcare and education organizations and steal data that later gets leveraged in double extortion ransom schemes. [...]

https://www.bleepingcomputer.com/news/security/pysa-ransomware-backdoors-education-orgs-using-chachi-malware/