CVE-2026-14227Network attack vector

Continued information access via stale API permissions

Published Jul 30, 2026 · Updated Jul 30, 2026

Insufficient session expiration in all MikroTik RouterOS versions with the API enabled allows remote authenticated users to retain prior access. Active API sessions preserve their permission set after inactivity timeouts or user-group changes instead of revalidating authorization. An already authenticated user whose group permissions are reduced can continue reading information that the revised permissions should deny.

CVSS severity6.9
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient session expiration in all MikroTik RouterOS versions with the API enabled allows remote authenticated users to retain prior access. Active API sessions preserve their permission set after inactivity timeouts or user-group changes instead of revalidating authorization. An already authenticated user whose group permissions are reduced can continue reading information that the revised permissions should deny.

The record

CVE
CVE-2026-14227
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
MikroTik
Product
RouterOS
Classifications
CWE-613, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MikroTik · RouterOSversion=All versions

Published CVSS scores

6.9ICS-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
4.9ICS-CERTCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-613Insufficient Session Expiration
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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