Threat Intelligence / CVE / CVE-2026-26113

CVE-2026-26113 — Microsoft Office

CVSS v3.1 8.4 (HIGH) · EPSS 0.0% (higher than 17.8% of all scored CVEs) · Priority 4.9/10 · Published 2026-03-10

As of 2026-03-13, CVE-2026-26113 is a HIGH-severity vulnerability in Microsoft Office, CVSS v3.1 8.4, EPSS 0.0% (17.8th percentile). Threadlinqs Intelligence links 2 tracked threat campaigns to CVE-2026-26113, most recently “Microsoft Office Preview Pane Remote Code Execution — CVE-2026-26110 (Type Confusion) & CVE-2026-26113 (Untrusted Pointer Dereference)”.

Last updated: 2026-03-13

What is CVE-2026-26113?

Untrusted pointer dereference in Microsoft Office allows an unauthorized attacker to execute code locally.

The record classifies CVE-2026-26113 under weakness classes CWE-822, NVD-CWE-Other. Its CVSS v3 base vector states that the flaw requires local access to the host, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 14 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: 8.4 — HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (FIRST): 0.0% probability of exploitation in the next 30 days, higher than 17.8% of all scored CVEs
CISA KEV: Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority: 4.9/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published: 2026-03-10, last modified 2026-03-13

Is CVE-2026-26113 being exploited?

It currently carries a trending score of 14 in the Threadlinqs vulnerability feed.

Affected products and versions

Microsoft: 365 Apps, Office 2016, Office 2019, Office Long Term Servicing Channel 2021, Office Long Term Servicing Channel 2024, Sharepoint Server, Sharepoint Server 2016, Sharepoint Server 2019

Showing 8 of 14 recorded product entries.

How to fix CVE-2026-26113

The record marks a vendor fix as available for CVE-2026-26113. Patch reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26113. Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26113. 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-2026-26113

2 tracked threats in the Threadlinqs corpus reference CVE-2026-26113, either in the campaign’s CVE list or as an indicator on the campaign record.

Microsoft Office Preview Pane Remote Code Execution — CVE-2026-26110 (Type Confusion) & CVE-2026-26113 (Untrusted Pointer Dereference) — CRITICAL · 2026-03-11
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-2026-26113 are available via the Threadlinqs MCP server (Purple tier). View plans →

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