Threat Intelligence / CVE / CVE-2026-32190

CVE-2026-32190 — Microsoft Word

CVSS v3.1 8.4 (HIGH) · EPSS 0.0% (higher than 26.5% of all scored CVEs) · Priority 5.3/10 · Published 2026-04-14

As of 2026-04-14, CVE-2026-32190 is a HIGH-severity vulnerability in Microsoft Word, CVSS v3.1 8.4, EPSS 0.0% (26.5th percentile). Threadlinqs Intelligence links 2 tracked threat campaigns to CVE-2026-32190, 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)”.

Last updated: 2026-04-14

What is CVE-2026-32190?

A heap-based buffer overflow vulnerability exists in Microsoft Word that allows remote code execution via the Preview Pane. Opening or previewing a specially crafted .docx file triggers heap corruption, enabling an attacker to execute arbitrary code in the context of the current user. The attack vector through the Preview Pane means exploitation can occur without the user explicitly opening the document, significantly increasing the risk surface. This vulnerability was patched as part of the Microsoft April 2026 Patch Tuesday release addressing 167 vulnerabilities.

The record classifies CVE-2026-32190 under weakness class CWE-122. Its CVSS v3 base vector states that the flaw requires local access to the host, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 3 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 151 days ago.

Severity and exploitation probability

CVSS v3.1 base score
8.4 — HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (FIRST)
0.0% probability of exploitation in the next 30 days, higher than 26.5% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
5.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-04-14

Is CVE-2026-32190 being exploited?

It currently carries a trending score of 12 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2026-32190

The record marks a vendor fix as available for CVE-2026-32190. Patch reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32190. Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32190. 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-2026-32190

2 tracked threats in the Threadlinqs corpus reference CVE-2026-32190, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

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

Full detection coverage & IOCs for threats exploiting CVE-2026-32190 are available via the Threadlinqs MCP server (Purple tier). View plans →

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