CISA Adds CVE-2026-33634 to Known Exploited Vulnerabilities Catalog

CISA ICS-CERT Advisories

Published March 26th, 2026

Detected March 26th, 2026

Summary

CISA has added CVE-2026-33634, an Aqua Security Trivy vulnerability, to its Known Exploited Vulnerabilities (KEV) Catalog due to evidence of active exploitation. This action mandates remediation for Federal Civilian Executive Branch (FCEB) agencies under Binding Operational Directive (BOD) 22-01.

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What changed

CISA has added CVE-2026-33634, an embedded malicious code vulnerability in Aqua Security's Trivy software, to its Known Exploited Vulnerabilities (KEV) Catalog. This inclusion is based on evidence of active exploitation and signifies a heightened risk to federal networks. The addition triggers mandatory remediation requirements for Federal Civilian Executive Branch (FCEB) agencies under Binding Operational Directive (BOD) 22-01, which mandates timely patching of identified vulnerabilities.

FCEB agencies must prioritize the remediation of CVE-2026-33634 by the established deadline to comply with BOD 22-01 and protect their networks. While BOD 22-01 specifically applies to FCEB agencies, CISA strongly recommends that all organizations, regardless of sector, incorporate this vulnerability into their vulnerability management practices and prioritize its remediation to mitigate cyberattack risks.

What to do next

Remediate CVE-2026-33634 by the deadline specified in BOD 22-01.
Prioritize vulnerability management practices for all KEV Catalog entries.

Source document (simplified)

Alert

CISA Adds One Known Exploited Vulnerability to Catalog

Release Date

March 26, 2026

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.

CVE-2026-33634 Aqua Security Trivy Embedded Malicious Code Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses 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.

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