Original release date: August 21, 2021
Malicious cyber actors are actively exploiting the following ProxyShell vulnerabilities: CVE-2021-34473, CVE-2021-34523, and CVE-2021-31207. An attacker exploiting these vulnerabilities could execute arbitrary code on a vulnerable machine. CISA strongly urges organizations to identify vulnerable systems on their networks and immediately apply Microsoft’s Security Update from May 2021—which remediates all three ProxyShell vulnerabilities—to protect against these attacks.
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Systems Affected Applications and systems that use the OpenSSL SSL/TLS library Overview …
Systems Affected Continuing Threats to Home Users View Previous Alerts Alert (SA04-079A) Continuing Threats…
Systems Affected Microsoft Windows systems Overview A cross-domain vulnerability in the Outlook…
Systems Affected Systems running Microsoft Windows Overview There are multiple vulnerabilities in…
Systems Affected Microsoft Windows Operating Systems Microsoft Windows Remote Procedure Call (RPC) and Distributed…
Systems Affected Cisco routers and switches running vulnerable versions of IOS. Vulnerable IOS versions known…
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