THREATPORT/VULNERABILITY/CVE-2026-21249
LOW SEVERITY

CVE-2026-21249

Windows 10 1607 vulnerability

CVSS
3.3
EPSS
10.7%
EPSS pct
95th
Exploited
No known
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing locally.
Affected vendor
Microsoft
Affected product
Windows 10 1607
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Weakness type (CWE)
Published
2026-02-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality.

Its EPSS score of 10.7% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2026-21249

  • Confirm whether Microsoft Windows 10 1607 is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2026-21249.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2026-21249

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2026-21249 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2026-21249?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2026-21249.

Start free scan

No credit card. Agentless.

Related vulnerabilities

LOW
CVE-2017-3033
Acrobat vulnerability
LOW
CVE-2017-8676
Live Meeting vulnerability
LOW
CVE-2017-11768
Windows Media Player vulnerability