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276 vulnerabilities by mikrotik
CVE-2026-86060 (GCVE-0-2026-86060)
Vulnerability from nvd – Published: 2026-09-05 20:00 – Updated: 2026-09-09 04:26Title
SSH session privilege manipulation via a crafted username in Mikrotik RouterOS
Summary
RouterOS contains an argument-handling flaw in the SSH login
path involving usernames that begin with a prohibited character, allowing for the trusted RouterOS policy mask to be changed, leading to privilege escalation. Exploitation requires an unauthenticated SSH session to reach the RouterOS login helper.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-88 - Improper neutralization of argument delimiters in a command ('argument injection')
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/6-49-21-long-term-is… | release-notes |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
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CVE-2026-67281 (GCVE-0-2026-67281)
Vulnerability from nvd – Published: 2026-09-05 20:00 – Updated: 2026-09-08 15:32
VLAI
EPSS
VEX
Title
Unauthenticated file read in Mikrotik RouterOS
Summary
RouterOS WebFig contains an unauthenticated file-read vulnerability in the /jsproxy path where a newly allocated session retains a stale uninitialized principal pointer used for file authorization. An unauthenticated attacker can prepare the allocator so that the file-serving path dereferences this pointer with sufficient rights, then supply parent-directory components in an encrypted URI to escape the WebFig file namespace and disclose root-owned files, including configuration stores containing credentials.This issue affects only 7.x branch was fixed in versions: 7.23.4 (Long-term) and 7.24.2 (Stable)
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:31 UTC
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
Date Public
2026-09-05 00:00
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CVE-2026-67279 (GCVE-0-2026-67279)
Vulnerability from nvd – Published: 2026-09-05 20:00 – Updated: 2026-09-08 15:31
VLAI
EPSS
VEX
Title
SSH Pre-Authentication Rekey State Bypass in MikroTik RouterOS
Summary
RouterOS SSH enters the connection protocol after a client-requested rekey even though user authentication was never attempted, allowing an unauthenticated client to open a session channel and send an exec request. On affected builds the server dispatches the command, enabling unauthenticated creation, overwrite, and reconstruction of files in the RouterOS managed file namespace, including support files containing configuration and diagnostic data.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:31 UTC
CWE
- CWE-841 - Improper enforcement of behavioral workflow
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/6-49-21-long-term-is… | release-notes |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
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CVE-2026-67278 (GCVE-0-2026-67278)
Vulnerability from nvd – Published: 2026-09-05 20:00 – Updated: 2026-09-08 15:30
VLAI
EPSS
VEX
Title
TLS server impersonation possible in Mikrotik RouterOS
Summary
MikroTik RouterOS accepts malformed RSA/PKCS#1 v1.5 signatures during X.509 validation. Because its trust store includes an e=3 root CA, an attacker controlling or redirecting an outbound RouterOS TLS connection can use the root’s public certificate - without its private key - to forge a trusted intermediate and issue certificates for arbitrary hostnames, enabling TLS server impersonation.
This issue affects only 7.x branch was fixed in versions: 7.23.4 (Long-term) and 7.24.2 (Stable)
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:30 UTC
CWE
- CWE-347 - Improper verification of cryptographic signature
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
Date Public
2026-09-05 00:00
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CVE-2026-67277 (GCVE-0-2026-67277)
Vulnerability from nvd – Published: 2026-09-05 20:00 – Updated: 2026-09-09 04:26Title
Kernel memory disclosure and denial of service in MikroTik RouterOS btest service
Summary
RouterOS accepts a "related" btest connection before the corresponding primary session has completed authentication. An unauthenticated client can use this state to start an IPv4 UDP test. With "random-data=false", the sender transmits an uninitialized tail from a kernel packet buffer. A separate unchecked, inverted packet-size interval causes unsigned integer underflow, anomalously large fragmented output, and can restart the RouterOS kernel.
This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-306 - Missing authentication for critical function
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/6-49-21-long-term-is… | release-notes |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
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CVE-2026-67276 (GCVE-0-2026-67276)
Vulnerability from nvd – Published: 2026-09-05 20:00 – Updated: 2026-09-09 04:26Title
SSH user impersonation possible in Mikrotik RouterOS
Summary
RouterOS does not compare the complete RSA public key when matching an SSH authentication request to an authorized user key, checking the key type and modulus but omitting the exponent. Because signature verification uses the client-supplied key, an attacker knowing an authorized RSA modulus can supply a key with exponent one, forge a valid signature, and open an SSH command channel as the target user without the private key.This issue affects only 7.x branch was fixed in versions: 7.23.4 (Long-term) and 7.24.2 (Stable)
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-347 - Improper verification of cryptographic signature
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
Date Public
2026-09-05 00:00
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CVE-2026-14227 (GCVE-0-2026-14227)
Vulnerability from nvd – Published: 2026-07-30 17:39 – Updated: 2026-07-30 19:15
VLAI
EPSS
VEX
Title
Insufficient session expiration in MikroTik RouterOS
Summary
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.
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 19:15 UTC
CWE
- CWE-613 - Insufficient session expiration
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
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CVE-2026-16347 (GCVE-0-2026-16347)
Vulnerability from nvd – Published: 2026-07-28 19:59 – Updated: 2026-07-29 13:57
VLAI
EPSS
VEX
Title
Improper restriction of excessive authentication attempts in MikroTik RouterOS and Cloud Hosted Router
Summary
MikroTik RouterOS contains a weakness in its API authentication handling that lacks effective safeguards against excessive login attempts. The system does not enforce meaningful rate-limiting, account lockout, or source-based restrictions, allowing repeated authentication failures to proceed without defensive response. In some versions, a fixed per-connection delay is present, but it can be bypassed through concurrent sessions, resulting in continued high-volume attempts. This deficiency increases the risk that an attacker could eventually obtain valid credentials and gain unauthorized access to administrative services.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 13:57 UTC
CWE
- CWE-307 - Improper restriction of excessive authentication attempts
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| MikroTik | RouterOS |
Affected:
All versions
|
|
| MikroTik | Cloud Hosted Router |
Affected:
All versions
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CVE-2025-42611 (GCVE-0-2025-42611)
Vulnerability from nvd – Published: 2026-05-05 10:58 – Updated: 2026-05-05 12:49
VLAI
EPSS
VEX
Title
Improper certificate validation in multiple RouterOS services
Summary
RouterOS provides various services that rely on correct
verification of client and server certificates to secure confidentiality and
integrity of communications. This includes OpenVPN, CAPsMAN, Dot1x (802.1X),
among others.
The vulnerability lies in shared certificate validation
logic which uses the system certificate store that is shared and equally
trusted by all system services. This causes confusion of scope, allowing any
certificate authority present in the system-wide trust store to be trusted in
any context (with some exceptions), allowing partial or full authentication
bypass in CAPsMAN, OpenVPN, Dot1X and potentially others.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-05 12:38 UTC
CWE
- CWE-295 - Improper certificate validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cert.si/en/cve-2025-42611/ | third-party-advisorygovernment-resource |
Impacted products
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CVE-2026-7668 (GCVE-0-2026-7668)
Vulnerability from nvd – Published: 2026-05-02 20:00 – Updated: 2026-05-20 07:33
VLAI
EPSS
VEX
Title
MikroTik RouterOS SCEP Endpoint scep.p ASN1_STRING_data out-of-bounds
Summary
A vulnerability was identified in MikroTik RouterOS 6.49.8. This vulnerability affects the function ASN1_STRING_data in the library nova/lib/www/scep.p of the component SCEP Endpoint. The manipulation of the argument transactionID/messageType leads to out-of-bounds read. The attack may be initiated remotely. The exploit is publicly available and might be used. You should upgrade the affected component. The vendor recommends to "use the latest v6.x or 7.x MikroTik RouterOS version, the reported issue should be fixed there."
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-04 15:21 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/360804 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/360804/cti | signaturepermissions-required |
| https://vuldb.com/submit/798623 | third-party-advisory |
| https://github.com/ezio315/cve/issues/4 | exploitissue-tracking |
Impacted products
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CVE-2025-10948 (GCVE-0-2025-10948)
Vulnerability from nvd – Published: 2025-09-25 14:02 – Updated: 2025-10-13 16:58
VLAI
EPSS
VEX
Title
MikroTik RouterOS libjson.so print parse_json_element buffer overflow
Summary
A vulnerability has been found in MikroTik RouterOS 7. This affects the function parse_json_element of the file /rest/ip/address/print of the component libjson.so. The manipulation leads to buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 7.20.1 and 7.21beta2 mitigates this issue. You should upgrade the affected component. The vendor replied: "Our bug tracker reports that your issue has been fixed. This means that we plan to release a RouterOS update with this fix. Make sure to upgrade to the next release when it comes out."
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-25 14:16 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.325818 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.325818 | signaturepermissions-required |
| https://vuldb.com/?submit.652387 | third-party-advisory |
| https://github.com/a2ure123/libjson-unicode-buffe… | exploit |
| https://github.com/a2ure123/libjson-unicode-buffe… | exploit |
Impacted products
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CVE-2025-6563 (GCVE-0-2025-6563)
Vulnerability from nvd – Published: 2025-07-03 11:18 – Updated: 2025-07-03 13:17
VLAI
EPSS
VEX
Title
Cross-site scripting via dst parameter in RouterOS WiFi hotspot
Summary
A cross-site scripting vulnerability is present in the hotspot of MikroTik's RouterOS on versions below 7.19.2. An attacker can inject the `javascript` protocol in the `dst` parameter. When the victim browses to the malicious URL and logs in, the XSS executes. The POST request used to login, can also be converted to a GET request, allowing an attacker to send a specifically crafted URL that automatically logs in the victim (into the attacker's account) and triggers the payload.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-03 13:07 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
1 reference
Impacted products
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CVE-2025-6443 (GCVE-0-2025-6443)
Vulnerability from nvd – Published: 2025-06-25 21:29 – Updated: 2025-06-26 14:18
VLAI
EPSS
VEX
Title
Mikrotik RouterOS VXLAN Source IP Improper Access Control Vulnerability
Summary
Mikrotik RouterOS VXLAN Source IP Improper Access Control Vulnerability. This vulnerability allows remote attackers to bypass access restrictions on affected installations of Mikrotik RouterOS. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of remote IP addresses when processing VXLAN traffic. The issue results from the lack of validation of the remote IP address against configured values prior to allowing ingress traffic into the internal network. An attacker can leverage this vulnerability to gain access to internal network resources. Was ZDI-CAN-26415.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-26 14:18 UTC
CWE
- CWE-284 - Improper Access Control
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_research-advisory |
Date Public
2025-06-25 21:29
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CVE-2026-86060 (GCVE-0-2026-86060)
Vulnerability from cvelistv5 – Published: 2026-09-05 20:00 – Updated: 2026-09-09 04:26Title
SSH session privilege manipulation via a crafted username in Mikrotik RouterOS
Summary
RouterOS contains an argument-handling flaw in the SSH login
path involving usernames that begin with a prohibited character, allowing for the trusted RouterOS policy mask to be changed, leading to privilege escalation. Exploitation requires an unauthenticated SSH session to reach the RouterOS login helper.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-88 - Improper neutralization of argument delimiters in a command ('argument injection')
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/6-49-21-long-term-is… | release-notes |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
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CVE-2026-67281 (GCVE-0-2026-67281)
Vulnerability from cvelistv5 – Published: 2026-09-05 20:00 – Updated: 2026-09-08 15:32
VLAI
EPSS
VEX
Title
Unauthenticated file read in Mikrotik RouterOS
Summary
RouterOS WebFig contains an unauthenticated file-read vulnerability in the /jsproxy path where a newly allocated session retains a stale uninitialized principal pointer used for file authorization. An unauthenticated attacker can prepare the allocator so that the file-serving path dereferences this pointer with sufficient rights, then supply parent-directory components in an encrypted URI to escape the WebFig file namespace and disclose root-owned files, including configuration stores containing credentials.This issue affects only 7.x branch was fixed in versions: 7.23.4 (Long-term) and 7.24.2 (Stable)
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:31 UTC
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
Date Public
2026-09-05 00:00
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CVE-2026-67279 (GCVE-0-2026-67279)
Vulnerability from cvelistv5 – Published: 2026-09-05 20:00 – Updated: 2026-09-08 15:31
VLAI
EPSS
VEX
Title
SSH Pre-Authentication Rekey State Bypass in MikroTik RouterOS
Summary
RouterOS SSH enters the connection protocol after a client-requested rekey even though user authentication was never attempted, allowing an unauthenticated client to open a session channel and send an exec request. On affected builds the server dispatches the command, enabling unauthenticated creation, overwrite, and reconstruction of files in the RouterOS managed file namespace, including support files containing configuration and diagnostic data.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:31 UTC
CWE
- CWE-841 - Improper enforcement of behavioral workflow
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/6-49-21-long-term-is… | release-notes |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
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CVE-2026-67278 (GCVE-0-2026-67278)
Vulnerability from cvelistv5 – Published: 2026-09-05 20:00 – Updated: 2026-09-08 15:30
VLAI
EPSS
VEX
Title
TLS server impersonation possible in Mikrotik RouterOS
Summary
MikroTik RouterOS accepts malformed RSA/PKCS#1 v1.5 signatures during X.509 validation. Because its trust store includes an e=3 root CA, an attacker controlling or redirecting an outbound RouterOS TLS connection can use the root’s public certificate - without its private key - to forge a trusted intermediate and issue certificates for arbitrary hostnames, enabling TLS server impersonation.
This issue affects only 7.x branch was fixed in versions: 7.23.4 (Long-term) and 7.24.2 (Stable)
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:30 UTC
CWE
- CWE-347 - Improper verification of cryptographic signature
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
Date Public
2026-09-05 00:00
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CVE-2026-67277 (GCVE-0-2026-67277)
Vulnerability from cvelistv5 – Published: 2026-09-05 20:00 – Updated: 2026-09-09 04:26Title
Kernel memory disclosure and denial of service in MikroTik RouterOS btest service
Summary
RouterOS accepts a "related" btest connection before the corresponding primary session has completed authentication. An unauthenticated client can use this state to start an IPv4 UDP test. With "random-data=false", the sender transmits an uninitialized tail from a kernel packet buffer. A separate unchecked, inverted packet-size interval causes unsigned integer underflow, anomalously large fragmented output, and can restart the RouterOS kernel.
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Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-306 - Missing authentication for critical function
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/6-49-21-long-term-is… | release-notes |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
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CVE-2026-67276 (GCVE-0-2026-67276)
Vulnerability from cvelistv5 – Published: 2026-09-05 20:00 – Updated: 2026-09-09 04:26Title
SSH user impersonation possible in Mikrotik RouterOS
Summary
RouterOS does not compare the complete RSA public key when matching an SSH authentication request to an authorized user key, checking the key type and modulus but omitting the exponent. Because signature verification uses the client-supplied key, an attacker knowing an authorized RSA modulus can supply a key with exponent one, forge a valid signature, and open an SSH command channel as the target user without the private key.This issue affects only 7.x branch was fixed in versions: 7.23.4 (Long-term) and 7.24.2 (Stable)
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-347 - Improper verification of cryptographic signature
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
Date Public
2026-09-05 00:00
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CVE-2026-14227 (GCVE-0-2026-14227)
Vulnerability from cvelistv5 – Published: 2026-07-30 17:39 – Updated: 2026-07-30 19:15
VLAI
EPSS
VEX
Title
Insufficient session expiration in MikroTik RouterOS
Summary
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.
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 19:15 UTC
CWE
- CWE-613 - Insufficient session expiration
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
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CVE-2026-16347 (GCVE-0-2026-16347)
Vulnerability from cvelistv5 – Published: 2026-07-28 19:59 – Updated: 2026-07-29 13:57
VLAI
EPSS
VEX
Title
Improper restriction of excessive authentication attempts in MikroTik RouterOS and Cloud Hosted Router
Summary
MikroTik RouterOS contains a weakness in its API authentication handling that lacks effective safeguards against excessive login attempts. The system does not enforce meaningful rate-limiting, account lockout, or source-based restrictions, allowing repeated authentication failures to proceed without defensive response. In some versions, a fixed per-connection delay is present, but it can be bypassed through concurrent sessions, resulting in continued high-volume attempts. This deficiency increases the risk that an attacker could eventually obtain valid credentials and gain unauthorized access to administrative services.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 13:57 UTC
CWE
- CWE-307 - Improper restriction of excessive authentication attempts
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| MikroTik | RouterOS |
Affected:
All versions
|
|
| MikroTik | Cloud Hosted Router |
Affected:
All versions
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CVE-2025-42611 (GCVE-0-2025-42611)
Vulnerability from cvelistv5 – Published: 2026-05-05 10:58 – Updated: 2026-05-05 12:49
VLAI
EPSS
VEX
Title
Improper certificate validation in multiple RouterOS services
Summary
RouterOS provides various services that rely on correct
verification of client and server certificates to secure confidentiality and
integrity of communications. This includes OpenVPN, CAPsMAN, Dot1x (802.1X),
among others.
The vulnerability lies in shared certificate validation
logic which uses the system certificate store that is shared and equally
trusted by all system services. This causes confusion of scope, allowing any
certificate authority present in the system-wide trust store to be trusted in
any context (with some exceptions), allowing partial or full authentication
bypass in CAPsMAN, OpenVPN, Dot1X and potentially others.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-05 12:38 UTC
CWE
- CWE-295 - Improper certificate validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cert.si/en/cve-2025-42611/ | third-party-advisorygovernment-resource |
Impacted products
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CVE-2026-7668 (GCVE-0-2026-7668)
Vulnerability from cvelistv5 – Published: 2026-05-02 20:00 – Updated: 2026-05-20 07:33
VLAI
EPSS
VEX
Title
MikroTik RouterOS SCEP Endpoint scep.p ASN1_STRING_data out-of-bounds
Summary
A vulnerability was identified in MikroTik RouterOS 6.49.8. This vulnerability affects the function ASN1_STRING_data in the library nova/lib/www/scep.p of the component SCEP Endpoint. The manipulation of the argument transactionID/messageType leads to out-of-bounds read. The attack may be initiated remotely. The exploit is publicly available and might be used. You should upgrade the affected component. The vendor recommends to "use the latest v6.x or 7.x MikroTik RouterOS version, the reported issue should be fixed there."
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-04 15:21 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/360804 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/360804/cti | signaturepermissions-required |
| https://vuldb.com/submit/798623 | third-party-advisory |
| https://github.com/ezio315/cve/issues/4 | exploitissue-tracking |
Impacted products
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CVE-2025-10948 (GCVE-0-2025-10948)
Vulnerability from cvelistv5 – Published: 2025-09-25 14:02 – Updated: 2025-10-13 16:58
VLAI
EPSS
VEX
Title
MikroTik RouterOS libjson.so print parse_json_element buffer overflow
Summary
A vulnerability has been found in MikroTik RouterOS 7. This affects the function parse_json_element of the file /rest/ip/address/print of the component libjson.so. The manipulation leads to buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 7.20.1 and 7.21beta2 mitigates this issue. You should upgrade the affected component. The vendor replied: "Our bug tracker reports that your issue has been fixed. This means that we plan to release a RouterOS update with this fix. Make sure to upgrade to the next release when it comes out."
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-25 14:16 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.325818 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.325818 | signaturepermissions-required |
| https://vuldb.com/?submit.652387 | third-party-advisory |
| https://github.com/a2ure123/libjson-unicode-buffe… | exploit |
| https://github.com/a2ure123/libjson-unicode-buffe… | exploit |
Impacted products
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CVE-2025-6563 (GCVE-0-2025-6563)
Vulnerability from cvelistv5 – Published: 2025-07-03 11:18 – Updated: 2025-07-03 13:17
VLAI
EPSS
VEX
Title
Cross-site scripting via dst parameter in RouterOS WiFi hotspot
Summary
A cross-site scripting vulnerability is present in the hotspot of MikroTik's RouterOS on versions below 7.19.2. An attacker can inject the `javascript` protocol in the `dst` parameter. When the victim browses to the malicious URL and logs in, the XSS executes. The POST request used to login, can also be converted to a GET request, allowing an attacker to send a specifically crafted URL that automatically logs in the victim (into the attacker's account) and triggers the payload.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-03 13:07 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
1 reference
Impacted products
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CVE-2025-6443 (GCVE-0-2025-6443)
Vulnerability from cvelistv5 – Published: 2025-06-25 21:29 – Updated: 2025-06-26 14:18
VLAI
EPSS
VEX
Title
Mikrotik RouterOS VXLAN Source IP Improper Access Control Vulnerability
Summary
Mikrotik RouterOS VXLAN Source IP Improper Access Control Vulnerability. This vulnerability allows remote attackers to bypass access restrictions on affected installations of Mikrotik RouterOS. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of remote IP addresses when processing VXLAN traffic. The issue results from the lack of validation of the remote IP address against configured values prior to allowing ingress traffic into the internal network. An attacker can leverage this vulnerability to gain access to internal network resources. Was ZDI-CAN-26415.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-26 14:18 UTC
CWE
- CWE-284 - Improper Access Control
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_research-advisory |
Date Public
2025-06-25 21:29
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VAR-202212-0564
Vulnerability from variot - Updated: 2026-04-11 00:02Mikrotik RouterOs before stable v7.6 was discovered to contain an out-of-bounds read in the snmp process. This vulnerability allows authenticated attackers to execute arbitrary code via a crafted packet
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VAR-201803-2171
Vulnerability from variot - Updated: 2025-11-18 15:38A buffer overflow was found in the MikroTik RouterOS SMB service when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system. The overflow occurs before authentication takes place, so it is possible for an unauthenticated remote attacker to exploit it. All architectures and all devices running RouterOS before versions 6.41.3/6.42rc27 are vulnerable. MikroTik RouterOS Contains a buffer error vulnerability.Information is obtained, information is altered, and service operation is disrupted (DoS) There is a possibility of being put into a state. MikroTik RouterOS is a routing operating system developed by MikroTik based on the Linux kernel. By installing this system, standard x86 PC devices can be turned into professional routers. A buffer overflow vulnerability exists in MikroTik RouterOS 6.41.3 and earlier. MikroTik RouterOS is prone to a buffer-overflow vulnerability because it fails to properly bounds-check user-supplied data before copying it into an insufficiently sized buffer. Failed exploit attempts will result in denial-of-service conditions. This system turns a PC computer into a professional router. SMB service is one of the SMB (communication protocol) services
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VAR-201808-0384
Vulnerability from variot - Updated: 2025-11-18 15:29MikroTik RouterOS through 6.42 allows unauthenticated remote attackers to read arbitrary files and remote authenticated attackers to write arbitrary files due to a directory traversal vulnerability in the WinBox interface. MikroTik RouterOS Contains an authentication vulnerability.Information may be obtained. MikroTik RouterOS is prone to a authentication-bypass vulnerability. An attacker can exploit this issue to bypass authentication mechanism and perform unauthorized actions. This may lead to further attacks. MikroTik RouterOS version 6.42 and prior versions are vulnerable. MikroTik RouterOS is a routing operating system. Winbox for MikroTik RouterOS is an application for managing MikroTik RouterOS system
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VAR-201902-0194
Vulnerability from variot - Updated: 2025-08-16 23:20MikroTik RouterOS before 6.43.12 (stable) and 6.42.12 (long-term) is vulnerable to an intermediary vulnerability. The software will execute user defined network requests to both WAN and LAN clients. A remote unauthenticated attacker can use this vulnerability to bypass the router's firewall or for general network scanning activities. MikroTik RouterOS Contains a vulnerability in bypassing filtering.Information may be obtained. MikroTik RouterOS is prone to a security-bypass vulnerability. An attacker can exploit this issue to security restrictions and perform unauthorized actions. This may lead to further attacks. MikroTik RouterOS version prior to 6.43.12, and 6.42.12 are vulnerable. MikroTik RouterOS is a Linux-based router operating system developed by Latvian MikroTik Company. The system can be deployed in a PC so that it provides router functionality
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