# CVE-2026-111285 — Microsoft 365 Apps for Enterprise

> As of 2026-11-11, CVE-2026-111285 is a HIGH-severity vulnerability in Microsoft 365 Apps for Enterprise, CVSS v3.1 8.8. Threadlinqs Intelligence links 3 tracked threat campaigns to CVE-2026-111285, most recently “Microsoft Patch Tuesday November 2026: ~1,095 vulnerabilities, 64 critical, one exploited Outlook NTLM-leak spoofing zero-day (CVE-2026-124194)”.

**Last updated:** 2026-11-11

## What is CVE-2026-111285?

Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

The record classifies CVE-2026-111285 under weakness class [CWE-122](https://intel.threadlinqs.com/cwe/CWE-122). 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, integrity, availability. 6 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 1 day ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.8 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-11-10

## Is CVE-2026-111285 being exploited?

It currently carries a trending score of 35 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Microsoft](https://intel.threadlinqs.com/vendors/microsoft): 365 Apps for Enterprise, Office 365 for Mac, Office LTSC 2021, Office LTSC 2024, Office LTSC for Mac 2021, Office LTSC for Mac 2024

## How to fix CVE-2026-111285

Patch reference: [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-111285](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-111285). 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-2026-111285

3 tracked threats in the Threadlinqs corpus reference CVE-2026-111285, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Microsoft Patch Tuesday November 2026: ~1,095 vulnerabilities, 64 critical, one exploited Outlook NTLM-leak spoofing zero-day (CVE-2026-124194)](https://intel.threadlinqs.com/threat/TL-2026-5711) — CRITICAL · 2026-11-11
- [Microsoft November 2026 Patch Release: 1,093 Vulnerabilities Fixed, Outlook Spoofing Zero-Day CVE-2026-124194 Actively Exploited](https://intel.threadlinqs.com/threat/TL-2026-5691) — CRITICAL · 2026-11-10
- [Microsoft November 2026 Patch Tuesday: Outlook Zero-Day CVE-2026-124194 Exploited to Steal NTLM Hashes (1,235 Flaws Fixed)](https://intel.threadlinqs.com/threat/TL-2026-5673) — HIGH · 2026-11-10

## Sources

Enriched from CVE.org, NVD. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [msrc.microsoft.com — vendor advisory](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-111285)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-111285
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