Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-67281

CVE-2026-67281HIGH

Mikrotik RouterOS — Unauthenticated file read in Mikrotik RouterOS

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   H   N   N    8.7   .0073   52.4     —

AFFECTED
  Product   Versions  Fixed
  RouterOS  7.24 –    —

TIMELINE
  Jul 29  Reserved by CERT-PL
  Sep 5   Published (CNA: CERT-PL)
  Sep 7   EXPLOIT PUBLISHED — CVE-2026-67281 (Mikrotik RouterOS). Public exploit reference added.
  Sep 8   EXPLOIT PUBLISHED — CVE-2026-67281 (Mikrotik RouterOS). Public exploit reference added.
  Sep 25  EXPLOIT PUBLISHED — CVE-2026-67281 (Mikrotik RouterOS). Public exploit reference added.

CWE-22, CWE-824 · CNA: CERT-PL · CVSS v4.0 · 7 references · NVD status: Analyzed

Description

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)

Lifecycle

Complete event history — 5 events, chronological
Date	Event	Detail
July 29, 2026	Reserved	Reserved by CERT-PL
September 5, 2026	Published	Published (CNA: CERT-PL)
September 7, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-67281 (Mikrotik RouterOS). Public exploit reference added.
September 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-67281 (Mikrotik RouterOS). Public exploit reference added.
September 25, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-67281 (Mikrotik RouterOS). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Mikrotik	RouterOS	—	7.24	—

Weaknesses

CWE-22 · CWE-824

References (7)

https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve [Third Party Advisory]
https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/ [Mitigation, Third Party Advisory]
https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802
https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801 [Release Notes]
https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800 [Release Notes]
https://mikrotik.com/supportsec/september-2026-vulnerability/ [Vendor Advisory]
https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/ [Exploit, Third Party Advisory]

Authoritative record: CVE-2026-67281 at cve.org

Vendors: mikrotik

Weaknesses: CWE-22 · CWE-824

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-67281 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.