The US-CERT Current Activity web page is a regularly updated summary of the most frequent, high-impact types of security incidents currently being reported to the US-CERT.

Microsoft Releases Security Update for Edge

Microsoft has released a security update to address a vulnerability in Edge (Chromium-based). An attacker could exploit this vulnerability to drop Dynamic Link Library (DLL) files and gain elevated privileges.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review Microsoft’s Security Advisory for CVE-2020-1341 and apply the necessary update.

Mozilla Releases Security Update for Thunderbird

Mozilla has released a security update to address multiple vulnerabilities in Thunderbird. An attacker could exploit some of these vulnerabilities to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the Mozilla Security Advisory for Thunderbird 78 and apply the necessary update.

CISA Releases Emergency Directive on Critical Microsoft Vulnerability

The Cybersecurity and Infrastructure Security Agency (CISA) has released Emergency Directive 20-03 addressing a critical vulnerability—CVE-2020-1350—affecting all versions of Windows Server with the Domain Name System (DNS) role enabled. A remote attacker could exploit this vulnerability to take control of an affected system. This vulnerability is considered “wormable” because malware exploiting it on a system could, without user interaction, propagate to other vulnerable systems.

Apple Releases Security Updates

Apple has released security updates to address vulnerabilities in multiple products. An attacker could exploit some of these vulnerabilities to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the Apple security pages for the following products and apply the necessary updates:

Malicious Activity Targeting COVID-19 Research, Vaccine Development

In response to malicious activity targeting COVID-19 research and vaccine development in the United States, United Kingdom (UK), and Canada, the Cybersecurity and Infrastructure Security Agency (CISA), UK’s National Cyber Security Centre (NCSC), Canada’s Communications Security Establishment (CSE), and the National Security Agency (NSA) released a Joint Cybersecurity Advisory to expose the threat.

Cisco Releases Security Updates for Multiple Products

Cisco has released security updates to address vulnerabilities affecting multiple products. An unauthenticated, remote attacker could exploit some of these vulnerabilities to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the following Cisco Advisories and apply the necessary updates. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories page.