By Sergiu Gatlan
CISA has added an actively exploited local privilege escalation vulnerability in the Windows Client/Server Runtime Subsystem (CSRSS) to its list of bugs abused in the wild.
This high severity security flaw (tracked as CVE-2022-22047) impacts both server and client Windows platforms, including the latest Windows 11 and Windows Server 2022 releases.
Microsoft has patched it as part of the July 2022 Patch Tuesday, and it classified it as a zero-day as it was abused in attacks before a fix was available.
“An attacker who successfully exploited this vulnerability could gain SYSTEM privileges,” Microsoft explained in a security advisory published today.
Redmond says the vulnerability was discovered internally by the Microsoft Threat Intelligence Center (MSTIC) and Microsoft Security Response Center (MSRC).
BleepingComputer has also reached out to Microsoft earlier today with questions about how this vulnerability was used in attacks.
Federal agencies given three weeks to patch
CISA has given the agencies three weeks, until August 2nd, to patch the actively exploited CVE-2022-22047 vulnerability and block ongoing attacks that could target their systems.
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