Threat Intelligence / CVE / CVE-2026-23669

CVE-2026-23669 — Microsoft Windows 10 1607

CVSS v3.1 8.8 (HIGH) · EPSS 0.0% (higher than 25.3% of all scored CVEs) · Priority 5.4/10 · Published 2026-03-10

As of 2026-03-24, CVE-2026-23669 is a HIGH-severity vulnerability in Microsoft Windows 10 1607, CVSS v3.1 8.8, EPSS 0.0% (25.3th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-23669, most recently “Microsoft Office RCE via Preview Pane (CVE-2026-26110, CVE-2026-26113) — March 2026 Patch Tuesday”.

Last updated: 2026-03-24

What is CVE-2026-23669?

Use after free in RPC Runtime allows an authorized attacker to execute code over a network.

The record classifies CVE-2026-23669 under weakness class CWE-416. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 25 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 187 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 8.8 — HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (FIRST): 0.0% probability of exploitation in the next 30 days, higher than 25.3% of all scored CVEs
CISA KEV: Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority: 5.4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published: 2026-03-10, last modified 2026-03-24

Is CVE-2026-23669 being exploited?

It currently carries a trending score of 11 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-2026-23669

The record marks a vendor fix as available for CVE-2026-23669. Patch reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23669. Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23669. 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-2026-23669

1 tracked threat in the Threadlinqs corpus references CVE-2026-23669, either in the campaign’s CVE list or as an indicator on the campaign record.

Microsoft Office RCE via Preview Pane (CVE-2026-26110, CVE-2026-26113) — March 2026 Patch Tuesday — CRITICAL · 2026-03-11

Sources

Seeded from research and not yet processed by the Threadlinqs enrichment pipeline, so blank CVSS, EPSS or KEV fields above mean NOT MEASURED rather than measured-absent.

msrc.microsoft.com

Full detection coverage & IOCs for threats exploiting CVE-2026-23669 are available via the Threadlinqs MCP server (Purple tier). View plans →

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