The **Cybersecurity and Infrastructure Security Agency (CISA)** has added seven new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. These vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to organizations. ### New Vulnerabilities Added: * **CVE-2008-4250**: **Microsoft Windows** Buffer Overflow Vulnerability * **CVE-2009-1537**: **Microsoft DirectX** NULL Byte Overwrite Vulnerability * **CVE-2009-3459**: **Adobe Acrobat** and Reader Heap-Based Buffer Overflow Vulnerability * **CVE-2010-0249**: **Microsoft Internet Explorer** Use-After-Free Vulnerability * **CVE-2010-0806**: **Microsoft Internet Explorer** Use-After-Free Vulnerability * **CVE-2026-41091**: **Microsoft Defender** Elevation of Privilege Vulnerability * **CVE-2026-45498**: **Microsoft Defender** Denial of Service Vulnerability ### BOD 22-01 and Remediation Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. [BOD 22-01 Fact Sheet](https://www.cisa.gov/sites/default/files/publications/Reducing_the_Significant_Risk_of_Known_Exploited_Vulnerabilities_211103.pdf) for more information. ### Recommendation 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 KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.