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VulnerabilityCVE-2026-26151Published 2026-04-14

CVE-2026-26151 — Microsoft Windows 10 1607

highPublic exploit1 PoC repo

As of 2026-09-25, CVE-2026-26151 is a HIGH-severity vulnerability in Microsoft Windows 10 1607, CVSS v3.1 7.1, EPSS 0.7% (54.7th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-26151, most recently “Microsoft April 2026 Patch Tuesday — 163 CVEs / 88 Advisories (CVE-2026-32201 SharePoint Zero-Day Exploited In-The-Wild, CVE-2026-33825 Defender EoP Public PoC, CVE-2026-33824 IKE RCE CVSS 9.8, CVE-2026-33827 TCP/IP Wormable RCE)”.

CVSS v3.1
7.1/10High
EPSS
0.7%Higher than 54.7% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
1Campaigns referencing it
Priority
7.7/10Threadlinqs triage score
Published
Updated 2026-09-25
CVSS v3.1 7.1 (HIGH) · EPSS 0.7% (higher than 54.7% of all scored CVEs) · Priority 7.7/10 · Published 2026-04-14

Last updated:

What is CVE-2026-26151?

Insufficient ui warning of dangerous operations in Windows Remote Desktop allows an unauthorized attacker to perform spoofing over a network.

The record classifies CVE-2026-26151 under weakness class CWE-357. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality. 25 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 197 days ago.

Severity and exploitation probability

CVSS v3.1 base score
7.1 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
EPSS (FIRST)
0.7% probability of exploitation in the next 30 days, higher than 54.7% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
7.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-04-14, last modified 2026-09-25

Is CVE-2026-26151 being exploited?

Weaponised exploit code for CVE-2026-26151 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 27 in the Threadlinqs vulnerability feed.

Affected products and versions

  • Microsoft: Windows 10 1607, Windows 10 1809, Windows 10 21h2, Windows 10 22h2, Windows 11 23h2, Windows 11 24h2, Windows 11 25h2, Windows 11 26h1, Windows Server 2012, Windows Server 2012 r2, Windows Server 2016, Windows Server 2019, Windows Server 2022, Windows Server 2022 23h2, Windows Server 2025

Showing 15 of 25 recorded product entries.

How to fix CVE-2026-26151

The record marks a vendor fix as available for CVE-2026-26151. Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26151. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2026-26151

1 tracked threat in the Threadlinqs corpus references CVE-2026-26151, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on .

Vendor advisory and patch