CISA Adds Two Known Exploited Vulnerabilities to Catalog

Summary

CISA added two new vulnerabilities, CVE-2025-34291 affecting Langflow and CVE-2026-34926 affecting Trend Micro Apex One, to its Known Exploited Vulnerabilities (KEV) Catalog. These vulnerabilities are actively exploited and pose significant risks, especially to federal enterprises, and agencies are urged to remediate them.

Full text

Alert CISA Adds Two Known Exploited Vulnerabilities to Catalog Release DateMay 21, 2026 CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2025-34291 Langflow Origin Validation Error Vulnerability CVE-2026-34926 Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. 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 to the federal enterprise. 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. 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 KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. This product is provided subject to this Notification and this Privacy & Use policy. Please share your thoughts We recently updated our anonymous product survey; we welcome your feedback.

Indicators of Compromise

• cve — CVE-2025-34291
• cve — CVE-2026-34926

Entities