Original release date: March 4, 2021
CISA is aware of threat actors using open source tools to search for vulnerable Microsoft Exchange Servers and advises entities to investigate for signs of a compromise from at least September 1, 2020. CISA has updated the Alert on the Microsoft Exchange server vulnerabilities with additional detailed mitigations.
CISA encourages administrators to review the updated Alert and the Microsoft Security Update and apply the necessary updates as soon as possible or disconnect vulnerable Exchange servers from the internet until the necessary patch is made available.
This product is provided subject to this Notification and this Privacy & Use policy.
CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence…
CISA released 10 Industrial Control Systems (ICS) advisories. These advisories provide timely information about current…
CISA has added five new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence…
CISA released one Industrial Control Systems (ICS) advisory on October 14, 2025. These advisories provide…
Today, CISA issued Emergency Directive ED 26-01: Mitigate Vulnerabilities in F5 Devices to direct Federal…
CISA released thirteen Industrial Control Systems (ICS) advisories on October 16, 2025. These advisories provide…
This website uses cookies.