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TI-2026-47577 Aliases CVE-2026-67281GHSA-m7q3-cwh2-ffg5

Unauthenticated file read in Mikrotik RouterOS

Priority HIGH 77CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

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)

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00725 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed RouterOS (Mikrotik): 7.24.2, 7.23.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MikroTikRouterOS7.24 to before 7.24.2; 7.20 to before 7.23.47.24.2, 7.23.4Patch availableCNA
  • RouterOS VendorMikroTik Affected 7.24 to before 7.24.2; 7.20 to before 7.23.4 Fixed in 7.24.2, 7.23.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:*7.20 to before 7.23.4; 7.24 to before 7.24.2VulnerableMikroTik
  • cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:* Versions 7.20 to before 7.23.4; 7.24 to before 7.24.2 Vulnerable ·MikroTik

Remediation

  • Fix · CNA RouterOS (Mikrotik) Fixed in 7.24.2, 7.23.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Mikrotik RouterOS — mikrotik.com/supportsec/september-2026-vulnerability

    6 records Highest priority Priority CRITICAL 3 CRITICAL, 1 HIGH, 2 MEDIUM

    Other records, highest priority first

    • TI-2026-58872 SSH session privilege manipulation via a crafted username in Mikrotik RouterOSPriority CRITICAL 99
    • TI-2026-47574 Kernel memory disclosure and denial of service in MikroTik RouterOS btest servicePriority CRITICAL 95
    • TI-2026-47576 SSH Pre-Authentication Rekey State Bypass in MikroTik RouterOSPriority CRITICAL 88
    Show all 6 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-67281
  2. 2026-10-03 Alias added: GHSA-m7q3-cwh2-ffg5

References

Exploit 1

Advisory 3

Other 2

  • TI-2018-05369 A buffer overflow was found in the MikroTik RouterOS SMB service when processing NetBIOS… KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-58872 SSH session privilege manipulation via a crafted username in Mikrotik RouterOS KEVCVSS 4.0CRITICAL 9.2
  • TI-2018-10669 MikroTik RouterOS through 6.42 allows unauthenticated remote attackers to read arbitrary… KEVCVSS 3.1CRITICAL 9.1
  • TI-2026-47574 Kernel memory disclosure and denial of service in MikroTik RouterOS btest service KEVCVSS 4.0HIGH 8.8
  • TI-2026-47576 SSH Pre-Authentication Rekey State Bypass in MikroTik RouterOS KEVCVSS 4.0MEDIUM 6.9
  • TI-2022-22302 Out-of-bounds read in MicroTik RouterOS CVSS 3.1CRITICAL 9.8
See all 87 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences