Original release date: November 9, 2021
Microsoft has released updates to address multiple vulnerabilities in Microsoft software. An attacker can exploit some of these vulnerabilities to take control of an affected system.
CISA encourages users and administrators to review Microsoft’s November 2021 Security Update Summary and Deployment Information and apply the necessary updates.
This product is provided subject to this Notification and this Privacy & Use policy.
Update (07/24/2025): CISA continues to update reporting on this ongoing activity, as threat actor tactics,…
CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence…
CISA released nine Industrial Control Systems (ICS) advisories on July 22, 2025. These advisories provide…
CISA released six Industrial Control Systems (ICS) advisories on July 24, 2025. These advisories provide…
CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence…
CISA, in partnership with the Federal Bureau of Investigation (FBI), the Department of Health and…
This website uses cookies.