Original release date: April 6, 2022

CISA has added three new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risk to the federal enterprise. Note: to view the newly added vulnerabilities in the catalog, click on the arrow on the of the “Date Added to Catalog” column, which will sort by descending dates. 

Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known CVEs that carry significant risk to the federal enterprise. BOD 22-01 requires FCEB agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. 

Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the Catalog that meet the meet the specified criteria. 

Original release date: April 6, 2022

Citrix has released security updates to address a vulnerability in Hypervisor. An attacker could exploit this vulnerability to cause a denial-of-service condition.

CISA encourages users and administrators to review Citrix Security Update CTX390511 and apply the necessary updates.

Original release date: April 4, 2022

CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risk to the federal enterprise. Note: to view the newly added vulnerabilities in the catalog, click on the arrow on the of the “Date Added to Catalog” column, which will sort by descending dates.

Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known CVEs that carry significant risk to the federal enterprise. BOD 22-01 requires FCEB agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information.

Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the Catalog that meet the meet the specified criteria.

Original release date: April 1, 2022

The CERT Coordination Center (CERT/CC) has released information on a vulnerability (CVE-2022-22965), known as “Spring4Shell,” affecting Spring Framework, a Java framework that creates applications, including web applications. A remote attacker could exploit this vulnerability to take control of an affected system.

CISA encourages users and administrators to review the CERT/CC Vulnerability Note VU #970766 for more information and to apply the recommended mitigations. 

Original release date: March 31, 2022

The Federal Bureau of Investigation (FBI) has released a Private Industry Notification (PIN) to inform U.S. Government Facilities Sector partners of cyber actors conducting ransomware attacks on local government agencies that have resulted in disrupted operational services, risks to public safety, and financial losses.

CISA encourages local government officials and public service providers to review FBI PIN: Ransomware Attacks Straining Local U.S. Governments and Public Services and apply the recommended mitigations.