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  • MikroTik RouterOS

    From Cisa Advisories@2:263/1 to All on Thu Jul 30 19:03:06 2026
    MikroTik RouterOS

    View CSAF
    Summary
    Successful exploitation of this vulnerability could allow an attacker to extract the router's WireGuard private key in plaintext using only low?privilege API access, enabling full VPN impersonation and decryption of all associated traffic.
    The following versions of MikroTik RouterOS are affected:

    RouterOS vers:all/* (CVE-2026-14227)





    CVSS
    Vendor
    Equipment
    Vulnerabilities




    v3 4.9
    MikroTik
    MikroTik RouterOS
    Insufficient Session Expiration




    Background

    Critical Infrastructure Sectors: Information Technology Countries/Areas Deployed: Worldwide Company Headquarters Location: Latvia


    Vulnerabilities

    Expand All +

    CVE-2026-14227

    An API session?management flaw in products with the MikroTik RouterOS API enabled are vulnerable to a Insufficient Session Expiration vulnerability. This could allow active sessions to retain their previous permission set after inactivity timeouts or user?group changes. As a result, an authenticated user whose permissions have been reduced may continue accessing information. View CVE Details

    Affected Products
    MikroTik RouterOS

    Vendor:MikroTik
    Product Version:MikroTik RouterOS: vers:all/* Product Status:known_affected


    Remediations
    MitigationMikroTik recommends administrators to ensure that when a user's permissions are downgraded, the affected user is fully logged out so the new policy can take effect.
    MitigationFor more information, contact MikroTik (https://mikrotik.com/support).https://mikrotik.com/support

    Relevant CWE: CWE-613 Insufficient Session Expiration

    Metrics




    CVSS Version
    Base Score
    Base Severity
    Vector String




    3.1
    4.9
    MEDIUM
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N


    4.0
    6.9
    MEDIUM
    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N








    Acknowledgments

    Andre Santos reported this vulnerability to CISA


    Legal Notice and Terms of Use
    This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).

    Recommended Practices
    CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
    CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices
    on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
    CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
    Strategies.
    Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
    CISA also recommends users take the following measures to protect themselves from social engineering attacks:
    Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
    Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
    No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

    Revision History

    Initial Release Date: 2026-07-30




    Date
    Revision
    Summary




    2026-07-30
    1
    Initial Publication




    Legal Notice and Terms of Use

    https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-01

    2026-07-30 12:00 UTC

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    * Origin: LISTS. from TCOB1 READ ONLY (2:263/1)