MikroTik Security Advisories & CVEs
8 advisories tracked · MikroTik Security Announcements + NVD · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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Official source
MikroTik Security Announcements + NVD
MikroTik publishes official security announcements at mikrotik.com/supportsec, but has no machine-readable feed and its CVEs are assigned by several CNAs. VulniPulse joins NVD candidate metadata to the server-rendered official announcement index, then releases an alert only after fetching the linked article and verifying its CVE identity in the article heading or body. Covers RouterOS (v6/v7), SwOS, Winbox, The Dude and MikroTik router/switch hardware (hEX, CCR, CRS, cAP, wAP).
Latest MikroTik advisories
High [CVE-2026-67281] Unauthenticated file read in Mikrotik RouterOS
MikroTik has found a security vulnerability in RouterOS and releases containing a fix have been published in all channels. This is an important security update. Most configurations are not at risk, but upgrading is highly recommended. Update 2026-10-06: this article now lists all six issues from the original report, including a corrected fix version for one of them (see below). The CVE numbers were initially withheld to give users time to upgrade. Your device should already give you the option to upgrade software in the “Check for updates” menu. Fix is included in: 7.25 beta 3. 7.24.2. 7.23.4. 6.49.21. Important: the fix for one of the issues (CVE-2026-67278, forged certificates and SSH host keys) in 7.24.2 and 7.23.4 was found to be incomplete. The complete fix is included in 7.24.3 (stable) and 7.23.6 (long-term). If you already upgraded in September, please upgrade again to one of these versions or any later release. RouterOS 6 is not affected by this particular issue. For regular home device users the issue does not pose an immediate risk, but we still suggest all users to upgrade. Affected product named by the advisory: MikroTik RouterOS.
High [CVE-2026-67277] Kernel memory disclosure and denial of service in MikroTik RouterOS btest service
MikroTik has found a security vulnerability in RouterOS and releases containing a fix have been published in all channels. This is an important security update. Most configurations are not at risk, but upgrading is highly recommended. To give time to update your systems, we are not currently publishing detailed information. Your device should already give you the option to upgrade software in the “Check for updates” menu. Fix is included in: 7.25 beta 3. 7.24.2. 7.23.4. 6.49.21. For regular home device users the issue does not pose an immediate risk, but we still suggest all users to upgrade. Steps to be taken Make sure SSH is not open to any untrusted networks. MikroTik default configuration blocks this port from the internet by default, but if you have manually opened this port, make sure only trusted IP can access it, or better yet, use a strong VPN like WireGuard to access your router and do not open any management ports at all. RouterOS will check if your device has been compromised, and set it to “Flagged” status if it is. This will be written in the “Log” section. Affected product named by the advisory: MikroTik RouterOS.
High [CVE-2024-27686] Mikrotik RouterOS (x86) 6.40.5 through 6.49.10 (fixed in 7) allows a remote attacker to cause a denial of service (device crash) via crafted packet data to the SMB service on TCP port 445
The SMB service in RouterOS 6 could be affected by a specially crafted SMB session setup packet. In the reported scenario, this could interrupt the active SMB session, which may also interrupt an ongoing file transfer that depends on that session. This issue is fixed in RouterOS 6.49.14. RouterOS version 7 is not affected. MikroTik always recommends keeping RouterOS devices up to date and using a strong firewall so SMB and other device services are not reachable from untrusted networks. Affected product named by the advisory: MikroTik RouterOS.
High [CVE-2025-10948] RouterOS: vulnerability has been found in MikroTik RouterOS 7.
A buffer overflow vulnerability has been discovered in MikroTik RouterOS 7, affecting the parse_json_element function within the libjson.so component. The vulnerability is triggered through the /rest/ip/address/print endpoint and can be exploited remotely. The exploit for this issue has been publicly disclosed and may be actively used. Upgrading to RouterOS version 7.20.1 or 7.21beta2 mitigates this issue. The vendor has confirmed that a fix has been implemented and plans to release a RouterOS update containing the patch. Users should upgrade to the latest available version to ensure full protection. MikroTik always recommends keeping RouterOS devices up to date and using a strong firewall so REST API and management services are available only from trusted networks.
High [CVE-2025-6443] RouterOS: Mikrotik RouterOS VXLAN Source IP Improper Access Control Vulnerability.
An improper access control vulnerability has been identified in MikroTik RouterOS, related to the handling of VXLAN source IP addresses. This flaw allows remote attackers to bypass access restrictions on affected installations without requiring authentication. The specific issue exists within the processing of remote IP addresses during VXLAN traffic handling. The router fails to validate the remote IP address against configured values before allowing ingress traffic into the internal network. An attacker can exploit this lack of validation to gain unauthorized access to internal network resources. This vulnerability was tracked as ZDI-CAN-26415. Users are advised to upgrade to RouterOS 7.20 or any later version to mitigate this vulnerability. MikroTik always recommends keeping RouterOS devices up to date and using a strong firewall to limit exposure from untrusted networks, including traffic to services or tunnel endpoints that should be reachable only from trusted peers.
High [CVE-2024-54952] RouterOS: MikroTik RouterOS 6.40.5, the SMB service contains a memory corruption vulnerability.
A memory corruption vulnerability has been discovered in the SMB service of MikroTik RouterOS. Remote, unauthenticated attackers can exploit this issue by sending specially crafted packets to the SMB service, triggering a null pointer dereference. This results in a remote denial of service (DoS) condition, rendering the SMB service unavailable. Users are advised to upgrade to the latest RouterOS 7.x stable release to address this vulnerability. MikroTik always recommends keeping RouterOS devices up to date and using a strong firewall so SMB and other device services are not reachable from untrusted networks.
High [CVE-2023-32154] RouterOS: Mikrotik RouterOS RADVD Out-Of-Bounds Write Remote Code Execution Vulnerability.
On 10/05/2023 (May 10th, 2023) MikroTik received information about a new vulnerability, which is assigned the ID CVE-2023-32154. The report stated, that vendor (MikroTik) was contacted in December, but we did not find record of such communication. The original report also says, that vendor was informed in person in an event in Toronto, where MikroTik was not present in any capacity. What this issue affects: The issue affects devices running MikroTik RouterOS versions v6.xx and v7.xx with enabled IPv6 advertisement receiver functionality. You are only affected if one of the below settings is applied: ipv6/settings/ set accept-router-advertisements=yes or ipv6/settings/set forward=no accept-router-advertisements=yes-if-forwarding-disabled If the above settings are not set up like in the example, you are not affected. Note that the vulnerable setting combination is not normally found in routers and is rarely used. What this issue can cause: This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Mikrotik RouterOS. Authentication is not required to exploit this vulnerability.
High [CVE-2023-30800] RouterOS: The web server used by MikroTik RouterOS version 6 is affected by a heap memory corruption issue.
The web server used by MikroTik RouterOS version 6 was affected by a heap memory corruption issue. In specific conditions, a crafted HTTP request could cause the web interface service to crash and restart. This affected the availability of the web interface, while the service restarted automatically. This issue is fixed in RouterOS 6.49.10 stable. MikroTik always recommends keeping RouterOS devices up to date and using a strong firewall so web and management services are not reachable from untrusted networks.