CISA Adds Two Known Exploited Vulnerabilities to Catalog
Overview
The Cybersecurity and Infrastructure Security Agency (CISA) has added two vulnerabilities in MikroTik RouterOS to its Known Exploited Vulnerabilities (KEV) Catalog due to evidence of active exploitation. The vulnerabilities are identified as CVE-2026-67277, which involves missing authentication for critical functions, and CVE-2026-86060, which pertains to improper handling of command delimiters. These weaknesses could allow attackers to gain complete control over affected systems, posing significant risks to federal agencies and other organizations that use these routers. CISA emphasizes the importance of promptly addressing these vulnerabilities, especially for federal agencies under its Binding Operational Directive 26-04, which mandates prioritizing the remediation of high-risk vulnerabilities. Organizations are encouraged to adopt similar practices for their own security management.
Key Takeaways
- Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
- Affected Systems: MikroTik RouterOS, specifically versions vulnerable to CVE-2026-67277 and CVE-2026-86060.
- Action Required: CISA recommends that organizations using MikroTik RouterOS prioritize patching these vulnerabilities as soon as possible.
- Timeline: Newly disclosed
Original Article Summary
CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-67277 MikroTik RouterOS Missing Authentication for Critical Function Vulnerability CVE-2026-86060 MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command 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.
Impact
MikroTik RouterOS, specifically versions vulnerable to CVE-2026-67277 and CVE-2026-86060.
Exploitation Status
This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.
Timeline
Newly disclosed
Remediation
CISA recommends that organizations using MikroTik RouterOS prioritize patching these vulnerabilities as soon as possible. Users should check for available updates from MikroTik and apply them to mitigate the risks associated with these vulnerabilities.
Additional Information
This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.
Related Topics: This incident relates to CVE, Vulnerability, Patch, and 1 more.