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CISA Adds Three Known Exploited Vulnerabilities to Catalog

● CRITICAL Confidence: 85% · Version 1

Executive summary

Public reporting documents: CISA Adds Three Known Exploited Vulnerabilities to Catalog. This is public CTI and does not assess organizational exposure.

Technical analysis

The available public source describes CISA Adds Three Known Exploited Vulnerabilities to Catalog. Technical details are limited to the cited source text and deterministic extracted records; unsupported attribution is excluded.

Evidence and sources

1 source document(s) and 3 evidence fragment(s) support this event; source publication and collection provenance are retained in the corpus.

Verified Evidence Claims

CISA Adds Three Known Exploited Vulnerabilities to Catalog. CISA has added three new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2023-49105 ownCloud Improper Authentication Vulnerability CVE-2026-53362 Linux Kernel Unspecified Vulnerability CVE-2026-66384 JFrog Artifactory Improper Limitation of a Pathname to a Restricted Directory Vulnerability These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied. While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. Aware of an exploited vulnerability not currently listed in the KEV Catalog? Submit it for potential addition through CISA’s KEV Nomination Form. Potential KEV additions must have a CVE ID, evidence of exploitation, and clear mitigation guidance.

100% Confidence Analysis 🔍

IOCs

No public IOC is available.

CVEs and affected products

Public-source record for CVE-2026-53362 in CISA Adds Three Known Exploited Vulnerabilities to Catalog.

Public-source record for CVE-2026-66384 in CISA Adds Three Known Exploited Vulnerabilities to Catalog.

Public-source record for CVE-2023-49105 in CISA Adds Three Known Exploited Vulnerabilities to Catalog.

ATT&CK mapping

No ATT&CK mapping is available.

Detection content

Sigma rules, YARA rules, Splunk SPL, and KQL detection logic.

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Threat hunting

Hypothesis-driven hunt procedures and telemetry checklist.

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Remediation

Containment actions, patching notes, and credential steps.

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Historical relationships

No published historical relationship is available.

Timeline and change history

Public source publication: CISA Adds Three Known Exploited Vulnerabilities to Catalog

Confidence and caveats

0.85

⚠️ Public CTI only; no claim about organizational exposure.

⚠️ Detection logic is generic triage and requires environment-specific tuning.

⚠️ Provider enrichment and ATT&CK mapping are not asserted where unavailable.