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2026-10-17 21:56 CEST · Intelligence refreshed (Europe/Stockholm)

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Latest synchronized CVE
CVSS 4.3 Published 2026-10-17 21:00 CEST
Vendor
Affected products
1 affected products/devices 1 software
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CVSS 9.9/10 Critical severity

First published: 13 October 2026, 23:08 CEST · Last modified: 17 October 2026, 02:50 CEST

CVE lookup — correlated security and lifecycle intelligence

· 8 sources correlated

Critical severity — prioritize remediation

Legacy Update ActiveX control accepts unauthorized hosting origins

SeverityCVSS 9.9Critical · Remote / network
ExploitationNone reportedEPSS 0.2% chance in 30 days
Affected products4 products4 softwareEvidence8 sourcesindependent intelligence collections

Why this rating

  • It can be exploited remotely over the network.
  • Rated critical (CVSS 9.9); no exploitation is reported in current sources.

What to do

  1. Check your inventory against the 4 affected products — start with internet-facing systems.
Vendor
Affected products
,
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Affected products (examples)

Click to open the full list
LegacyUpdate LegacyUpdateAFFECTED_FIELDGITAll 4 →

What the vulnerability is

Legacy Update is a tool for activating and installing updates on legacy Windows PCs. Legacy Update 1.12.0 through 1.13.1 contains an origin validation error in the IsPermitted method of its ActiveX control. After successfully reading the hosting document's hostname, a hostname that is not on the permitted list falls through without setting E_ACCESSDENIED, causing IsPermitted to return S_OK. An attacker who induces a user to visit a malicious webpage in Internet Explorer can invoke the control to enumerate update a…

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

Matched intelligence coverage 8 sources
EUVD Vulnrichment OSV EPSS CIRCL CWE CVE 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 OSV EPSS CIRCL OSINT MITRE CWE · 2 CVE / NVD catalog Affected products/devices · 4
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 4

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.

4Software / applications
NVD/CVE catalog 1CISA Vulnrichment 2Osv 2
Expand all affected categories (4) How can this affect my environment?
Software (4 — click to show all)
Vendor: LegacyUpdate
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: NVD/CVE catalogCorroborated: CISA Vulnrichmenthigh confidence
Vendor: LegacyUpdate
Software Affected range: version >= 1.12.0, < 1.13.2 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: Osvmedium-high confidence
Vendor: Not identified in correlated evidence
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: Osvmedium-high confidence
What each source says 4
European vulnerability intelligence: ENISA EUVD cross-reference: EUVD-2026-100662.
Exploit probability: Estimated exploitation probability 0.21% — percentile 10.8%.
Vulnerability summary: Legacy Update ActiveX control accepts unauthorized hosting origins
CIRCL OSINT observations: 1 CIRCL OSINT reference found. Retrieved types: 1 sighting.
OSV advisories 1
Legacy Update ActiveX control accepts unauthorized hosting origins
OSV
CVE-2026-97381 Published 2026-10-13T21:08:05.334Z Updated 2026-10-17T10:30:49.922685744Z

Legacy Update is a tool for activating and installing updates on legacy Windows PCs. Legacy Update 1.12.0 through 1.13.1 contains an origin validation error in the IsPermitted method of its ActiveX control. After successfully reading the hosting document's hostname, a hostname that is not on the permitted list falls through without setting E_ACCESSDENIED, causing IsPermitted to return S_OK. An attacker who induces a user to visit a malicious webpage in Internet Explorer can invoke the control to enumerate update and system information, install updates without consent, display dialogs, or restart the computer when a reboot is pending. This issue was fixed in Legacy Update 1.13.2.

OSV-CONVERSIONOSV-OUTPUT
GHSA-F4G7-4GMX-JFGF
Related products
Read full advisory Open source at storage.googleapis.comOpen GitHub advisory or evidenceOpen GitHub advisory or evidenceOpen GitHub advisory or evidenceOpen source at legacyupdate.netOpen GitHub advisory or evidence
Evidence coverage

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

Technical query coverage · 17 collections queried · 1 CVEs correlated
2026-10-17 21:56 CESTIntelligence refreshed
1unique CVEs queried and enriched
1unique CVEs correlated to this result
1unique advisories correlated
17intelligence 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.