Microsoft Issues January 2023 Patch Tuesday Updates, Warns of Zero-Day Exploit



The first Patch Tuesday fixes shipped by Microsoft for 2023 have addressed a total of 98 security flaws, including one bug that the company said is being actively exploited in the wild.

11 of the 98 issues are rated Critical and 87 are rated Important in severity, with one of the vulnerabilities also listed as publicly known at the time of release. Separately, the Windows maker is expected to release updates for its Chromium-based Edge browser.

The vulnerability that’s under attack relates to CVE-2023-21674 (CVSS score: 8.8), a privilege escalation flaw in Windows Advanced Local Procedure Call (ALPC) that could be exploited by an attacker to gain SYSTEM permissions.

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