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2026-10-19 21:52 CEST · Intelligence refreshed (Europe/Stockholm)

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Latest synchronized CVE
CVSS 5.5 Published 2026-10-19 20:42 CEST
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Affected products
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5 affected products/devices 5 operating system
General vulnerability query Recent High & critical CVEs

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CVSS 6.9/10 Medium severity

First published: 5 September 2026, 22:00 CEST · Last modified: 26 September 2026, 05:55 CEST

CVE lookup — correlated security and lifecycle intelligence

· 12 sources correlated

Actively exploited — patch now

SSH Pre-Authentication Rekey State Bypass in MikroTik RouterOS

SeverityCVSS 6.9Medium · Remote / network
ExploitationExploited in the wildEPSS 1.0% chance in 30 days · Exploit-DB
Affected products12 products2 OS · 10 softwareEvidence12 sourcesindependent intelligence collections

Why this rating

  • CISA lists this as exploited in real attacks (added 2026-09-25).
  • Working exploit code is public (Exploit-DB), so attacks require little skill.
  • EPSS estimates a 1.0% probability of exploitation in the next 30 days.
  • It can be exploited remotely over the network.

What to do

  1. CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see… (federal deadline 2026-09-28)
  2. Check your inventory against the 12 affected products — start with internet-facing systems.
  3. Until patched, restrict network exposure of affected systems and watch for exploitation attempts.
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Affected products
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What the vulnerability is

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…

Detailed evidence Everything below supports the summary above. Open only what you need.

Matched intelligence coverage 12 sources
KEV Exploit-DB EUVD CISA advisory Vulnrichment GHSA EPSS CIRCL CWE CVE Nvd Applicability Affected Products
Cross-source correlations 11 matched lanes

Direct intelligence-source relationships

Direct intelligence-source lanes: every lane below has direct evidence for

in that Scantide intelligence collection. Lanes share the CVE as their join key; their presence together does not imply that one source explicitly referenced another source's record.

Downstream affected vendors 1 vendors

Affected vendor/product relationships

These vendors are derived from affected product/device evidence tied to this CVE. This is intentionally separate from the direct intelligence-source lanes above: a vendor can have affected products without Scantide having a vendor-specific advisory or Microsoft KB record for the CVE.

1 affected vendors represented
Related through CISA advisory 1 advisory group

These CVEs are connected because CISA published them in the same advisory. This is strong contextual correlation, but does not by itself mean they form an exploit chain.

CISA-299CDE29964E0975

Affected software, operating systems, hardware and devices 12

Deduplicated across Scantide's structured CVE, NVD applicability, CSAF, vendor advisory, campaign and downstream product evidence. Taxonomy IDs and evidence-only identifiers are excluded from the asset count. Counts represent relationships Scantide can currently prove, not the theoretical maximum downstream ecosystem.

2Operating systems
10Software / applications
NVD/CVE catalog 1Kev 1CISA Vulnrichment 6NVD applicability graph 3Exploitdb 1Circl Osint 3
Software (10 — click to show all)
Vendor: Mikrotik
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: NVD/CVE catalogCorroborated: CISA VulnrichmentCorroborated: Kevhigh confidence
Vendor: Mikrotik
Software Affected range: version 7.24 — before 7.24.2 Product-associated Assertion
Primary: NVD applicability graph — official CPE Match expansionCorroborated: NVD applicability graph — structured affected recordCorroborated: CISA Vulnrichment — official CPE Match expansionCorroborated: CISA Vulnrichment — structured affected recordhigh confidence
Vendor: Mikrotik
Software Affected range: version 7.0.0 — before 7.23.4 Product-associated Assertion
Primary: CISA Vulnrichment — structured affected recordhigh confidence
Vendor: Mikrotik
Software Affected range: version 6.0.0 — before 6.49.21 Product-associated Assertion
Primary: CISA Vulnrichment — structured affected recordhigh confidence
Vendor: Not identified in correlated evidence
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: CISA Vulnrichmentmedium-high confidence
Vendor: Not identified in correlated evidence
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: CISA Vulnrichmentmedium-high confidence
Vendor: Not identified in correlated evidence
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: Exploitdbmedium-high confidence
Vendor: Not identified in correlated evidence
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: Circl Osint — explicit device/model relation from advisory textmedium confidence
Vendor: Not identified in correlated evidence
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: Circl Osint — explicit device/model relation from advisory texthigh confidence
Vendor: Not identified in correlated evidence
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: Circl Osint — explicit device/model relation from advisory textmedium confidence
Operating systems and platforms (2 — click to show all)
Vendor: mikrotik
Operating systems and platforms Affected range: from 7.0 inclusive — before 7.23.4 — hardware * — platform * Product-associated Assertion
Primary: NVD applicability graph — official CPE Match expansionhigh confidence
Vendor: mikrotik
Operating systems and platforms Affected range: from 6.0 inclusive — before 6.49.21 — hardware * — platform * Product-associated Assertion
Primary: NVD applicability graph — official CPE Match expansionhigh confidence
What each source says 6
Known exploitation: Listed as known exploited. Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's inter… Remediation due date: 2026-09-28.
European vulnerability intelligence: ENISA EUVD cross-reference: EUVD-2026-72027. Listed in the consolidated EUVD known-exploited dataset (cisa_kev, eukev_kev).
Exploit probability: Estimated exploitation probability 1.03% — percentile 63.1%.
Vulnerability summary: SSH Pre-Authentication Rekey State Bypass in MikroTik RouterOS
Public exploit evidence: 1 correlated exploit record found.
CIRCL OSINT observations: 51 CIRCL OSINT references found. Showing 30 retrieved objects. Retrieved types: 30 sighting.
CISA cybersecurity advisories 1
GitHub package advisories 1
GHSA-PQP3-GJGF-83CF
GitHub Advisory
GHSA-PQP3-GJGF-83CF Published 2026-09-05T21:31:20Z Updated 2026-09-25T18:31:17Z

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)

GHSA-PQP3-GJGF-83CF
Evidence coverage

Correlated from multiple vulnerability, exploitation, advisory, package and affected-product intelligence collections.

Technical query coverage · 16 collections queried · 1 CVEs correlated
2026-10-19 21:52 CESTIntelligence refreshed
1unique CVEs queried and enriched
1unique CVEs correlated to this result
2unique advisories correlated
16intelligence collections queried
Affected-product scope: The product/device count is the deduplicated set Scantide can prove from its currently ingested structured records and advisory text. It is not a claim that only those products were affected; component vulnerabilities such as Log4Shell can have a much larger downstream ecosystem. Advisory and vendor references are kept clickable so additional downstream exposure can be followed to the authoritative source.
Coverage note: Scantide correlates multiple public and locally indexed intelligence sources, but no dataset or matching process is complete. Results may omit software, dependencies, affected versions or advisories, and related records do not by themselves prove that a specific installation is vulnerable. Confirm important findings against vendor guidance and the installed product and version.