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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 8.2/10 High severity

First published: 16 September 2026, 15:12 CEST · Last modified: 1 October 2026, 17:21 CEST

CVE lookup — correlated security and lifecycle intelligence

· 7 sources correlated

Important — plan remediation

MikroTik RouterOS < 7.24 Heap Corruption via SMB1 SessionSetupAndX

SeverityCVSS 8.2High · Remote / network
ExploitationNone reportedEPSS 0.6% chance in 30 days
Affected products5 products5 softwareEvidence7 sourcesindependent intelligence collections

Why this rating

  • It can be exploited remotely over the network.
  • Rated high (CVSS 8.2); no exploitation is reported in current sources.

What to do

  1. Check your inventory against the 5 affected products — start with internet-facing systems.
Vendor
Affected products
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Affected products (examples)

Click to open the full list
MikroTik RouterOSMikroTiksemverAll 5 →

What the vulnerability is

MikroTik RouterOS before 7.24 contains a heap memory corruption vulnerability in the userspace SMB daemon that allows remote attackers to corrupt adjacent heap memory by supplying a crafted uniPwdLen value in the SMB1 SessionSetupAndX handler. An attacker can send a malformed SMB1 request with a uniPwdLen field that triggers an integer underflow, causing the resulting value to be used as the copy length in a memory copy operation into a smaller heap buffer, corrupting adjacent heap memory.

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

Matched intelligence coverage 7 sources
EUVD Vulnrichment GHSA EPSS CWE CVE Affected Products
Cross-source correlations 7 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.

7 matched source lanes
ENISA EUVD CISA Vulnrichment GitHub Advisory EPSS MITRE CWE · 2 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 5
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: through 6.49.18 inclusive Product-associated Assertion
Primary: CISA Vulnrichment — structured affected recordhigh confidence
Vendor: MikroTik
Software Affected range: version 7.0.0 — through 7.11.2 inclusive 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
What each source says 3
European vulnerability intelligence: ENISA EUVD cross-reference: EUVD-2026-80702.
Exploit probability: Estimated exploitation probability 0.58% — percentile 46.7%.
Vulnerability summary: MikroTik RouterOS < 7.24 Heap Corruption via SMB1 SessionSetupAndX
GitHub package advisories 1
GHSA-2JVH-JVQ5-35JQ
GitHub Advisory
GHSA-2JVH-JVQ5-35JQ Published 2026-09-16T15:31:10Z Updated 2026-09-16T15:31:10Z

MikroTik RouterOS before 7.24 contains a heap memory corruption vulnerability in the userspace SMB daemon that allows remote attackers to corrupt adjacent heap memory by supplying a crafted uniPwdLen value in the SMB1 SessionSetupAndX handler. An attacker can send a malformed SMB1 request with a uniPwdLen field that triggers an integer underflow, causing the resulting value to be used as the copy length in a memory copy operation into a smaller heap buffer, corrupting adjacent heap memory.

GHSA-2JVH-JVQ5-35JQ
Read full advisory Open NVD recordOpen source at forum.mikrotik.comOpen source at www.vulncheck.com
Evidence coverage

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

Technical query coverage · 15 collections queried · 1 CVEs correlated
2026-10-19 21:52 CESTIntelligence refreshed
1unique CVEs queried and enriched
1unique CVEs correlated to this result
1unique advisories correlated
15intelligence 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.