NSA Identifies New Vulnerabilities in Microsoft Exchange Servers
April 14, 2021
In its April update, Microsoft addressed a total of 114 security vulnerabilities, including one actively exploited zero-day flaw and four remote code execution issues within Exchange Server. Among these vulnerabilities, 19 are classified as Critical, 88 as Important, and one as Moderate. Notably, CVE-2021-28310 is a privilege escalation vulnerability within Win32k, currently under active exploitation, allowing attackers to execute malicious code and gain elevated privileges on affected systems. Cybersecurity firm Kaspersky, which reported the flaw to Microsoft in February, connected the zero-day exploit to the Bitter APT group, known for utilizing a similar vulnerability (CVE-2021-1732) in attacks last year. “This is an escalation of privilege (EoP) exploit likely used in conjunction with other browser exploits to bypass sandboxes or obtain system privileges for further access,” explained Kaspersky researcher Boris Larin.
NSA Uncovers New Vulnerabilities Impacting Microsoft Exchange Servers April 14, 2021 In a recent wave of updates, Microsoft addressed a total of 114 security vulnerabilities, prominent among them being a zero-day exploit and multiple remote code execution issues affecting Microsoft…