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2026-10-20 01:51 CEST · Intelligence refreshed (Europe/Stockholm)

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Latest synchronized CVE
CVSS 7.1 Published 2026-10-20 01:00 CEST
Vendor
Affected products
1 affected products/devices 1 software
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CVSS 9.2/10 Critical severity

First published: 5 September 2026, 22:00 CEST · Last modified: 9 September 2026, 06:26 CEST

CVE lookup — correlated security and lifecycle intelligence

· 9 sources correlated

Actively exploited — patch now

SSH user impersonation possible in Mikrotik RouterOS

SeverityCVSS 9.2Critical · Remote / network
ExploitationExploited in the wildEPSS 6.5% chance in 30 days
Affected products5 products5 softwareEvidence9 sourcesindependent intelligence collections

Why this rating

  • The EU known-exploited list (ENISA EUVD) reports exploitation in the wild.
  • EPSS estimates a 6.5% probability of exploitation in the next 30 days.
  • It can be exploited remotely over the network.
  • Rated critical (CVSS 9.2); no exploitation is reported in current sources.

What to do

  1. Check your inventory against the 5 affected products — start with internet-facing systems.
  2. Until patched, restrict network exposure of affected systems and watch for exploitation attempts.
Vendor
Affected products
,
,

Affected products (examples)

Click to open the full list
Mikrotik RouterOSMikrotikcustomAll 5 →

What the vulnerability is

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 (S…

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

Matched intelligence coverage 9 sources
EUVD Vulnrichment GHSA EPSS CIRCL CWE CVE Nvd Applicability Affected Products
Cross-source correlations 8 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.

8 matched source lanes
ENISA EUVD CISA Vulnrichment GitHub Advisory EPSS CIRCL OSINT MITRE CWE CVE / NVD catalog Affected products/devices · 5
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

Affected software, operating systems, hardware and devices 5

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.

5Software / applications
NVD/CVE catalog 1CISA Vulnrichment 5NVD applicability graph 2
Expand all affected categories (5) How can this affect my environment?
Software (5 — click to show all)
Vendor: Mikrotik
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: NVD/CVE catalogCorroborated: CISA Vulnrichmenthigh 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 7.9 — before 7.23.4 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: 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
What each source says 4
European vulnerability intelligence: ENISA EUVD cross-reference: EUVD-2026-72024. Listed in the consolidated EUVD known-exploited dataset (eukev_kev).
Exploit probability: Estimated exploitation probability 6.45% — percentile 93.7%.
Vulnerability summary: SSH user impersonation possible in Mikrotik RouterOS
CIRCL OSINT observations: 63 CIRCL OSINT references found. Showing 30 retrieved objects. Retrieved types: 30 sighting.
GitHub package advisories 1
GHSA-J9WG-77FW-F22F
GitHub Advisory
GHSA-J9WG-77FW-F22F Published 2026-09-05T21:31:19Z Updated 2026-09-25T15:31:25Z

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 was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)

GHSA-J9WG-77FW-F22F
Read full advisory Open NVD recordOpen source at cert.plOpen source at cert.plOpen source at forum.mikrotik.comOpen source at forum.mikrotik.comOpen source at forum.mikrotik.com
Evidence coverage

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

Technical query coverage · 16 collections queried · 1 CVEs correlated
2026-10-20 01:51 CESTIntelligence refreshed
1unique CVEs queried and enriched
1unique CVEs correlated to this result
1unique 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.