CISA 2026-06-23

CISA Adds Four Known Exploited Vulnerabilities to Catalog

Machine-generated analysis · WAYSCloud LLM

The advisory adds four actively exploited vulnerabilities, three of which affect Ubiquiti UniFi OS, indicating a cluster of issues in the same product.

Context

The affected products include Lantronix EDS5000 devices and Ubiquiti UniFi OS, a software platform used in network management. The advisory states these vulnerabilities are under active exploitation and grants total control of the affected asset post-exploitation. Three of the listed CVEs are specific to Ubiquiti UniFi OS, involving improper access control, path traversal, and improper input validation. The advisory references BOD 26-04, which sets remediation timelines for federal agencies based on risk, though the directive does not apply to non-federal entities.

Operator considerations

Check: Inventory internet-facing Lantronix EDS5000 and Ubiquiti UniFi OS devices.
Patch: Apply updates if available for CVE-2025-67038, CVE-2026-34908, CVE-2026-34909, and CVE-2026-34910.
Log: Monitor for unusual activity on systems running Ubiquiti UniFi OS or Lantronix EDS5000 firmware.

From Cybersecurity and Infrastructure Security Agency ↗

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

CVE-2025-67038 Lantronix EDS5000 Code Injection Vulnerability

CVE-2026-34908 Ubiquiti UniFi OS Improper Access Control Vulnerability

CVE-2026-34909 Ubiquiti UniFi OS Path Traversal Vulnerability

CVE-2026-34910 Ubiquiti UniFi OS Improper Input Validation 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) 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, specif...

Read the full advisory on CISA →