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Cisco this week shipped patches to address a new round of critical security vulnerabilities affecting Expressway Series and Cisco TelePresence Video Communication Server (VCS) that could be exploited by an attacker to gain elevated privileges and execute arbitrary code. The two flaws – tracked as  CVE-2022-20754 and CVE-2022-20755  (CVSS scores: 9.0) – relate to an arbitrary file write and a command injection flaw in the API and web-based management interfaces of the two products that could have serious impacts on affected systems. The company said both the issues stem from insufficient input validation of user-supplied command arguments, a weakness that could be weaponized by an authenticated, remote attacker to carry out directory traversal attacks, overwrite arbitrary files, and run malicious code on the underlying operating system as the root user. "These vulnerabilities were found during internal security testing by Jason Crowder of the Cisco Advanced Security Initia...

Microsoft on Tuesday  issued fixes for 56 flaws , including a critical vulnerability that's known to be actively exploited in the wild. In all, 11 are listed as Critical, 43 are listed as Important, and two are listed as Moderate in severity — six of which are previously disclosed vulnerabilities. The updates cover .NET Framework, Azure IoT, Microsoft Dynamics, Microsoft Edge for Android, Microsoft Exchange Server, Microsoft Office, Microsoft Windows Codecs Library, Skype for Business, Visual Studio, Windows Defender, and other core components such as Kernel, TCP/IP, Print Spooler, and Remote Procedure Call (RPC). A Windows Win32k Privilege Escalation Vulnerability The most critical of the flaws is a Windows Win32k privilege escalation vulnerability (CVE-2021-1732, CVSS score 7.8) that allows attackers with access to a target system to run malicious code with elevated permissions. Microsoft credited JinQuan, MaDongZe, TuXiaoYi, and LiHao of DBAPPSecurity for discovering and re...