---
id: "CVE-2026-112735"
page: "https://infrastack.ai/live/CVE-2026-112735"
kind: "vulnerability"
aliases: ["CVE-2026-112735"]
title: "Microsoft Word use-after-free allows remote code execution when a user opens crafted content (fixed 10 Nov 2026)"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "Microsoft 365 Apps for Enterprise", "fixed": ["Current Channel 2610 build 20527.20196"], "affected": ">= 16.0.1, below the 10 Nov 2026 build", "ecosystem": "vendor"}, {"name": "Office LTSC 2024", "fixed": ["16.0.17932.21140"], "affected": ">= 16.0.0, < 16.0.17932.21140", "ecosystem": "vendor"}, {"name": "Office LTSC 2021", "fixed": ["16.0.14334.21048"], "affected": ">= 16.0.1, < 16.0.14334.21048", "ecosystem": "vendor"}, {"name": "Office for Mac (365, LTSC 2021, LTSC 2024)", "fixed": ["16.115.26110837"], "affected": "< 16.115.26110837", "ecosystem": "vendor"}]
ecosystems: []
tags: ["macos", "microsoft-office", "other", "rce", "use-after-free", "windows", "word"]
not_affected_if: []
published_at: "2026-11-10T19:18:32+00:00"
first_seen_at: "2026-11-10T19:24:31+00:00"
updated_at: "2026-11-11T00:17:19+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112735", "first_seen_at": "2026-11-10T19:24:31+00:00"}, {"source": "analyst", "url": "https://app.opencve.io/cve/CVE-2026-112735", "first_seen_at": "2026-11-11T00:17:19+00:00", "cites": ["https://app.opencve.io/cve/CVE-2026-112735", "https://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates"]}]
exploit_sources: []
---

# Microsoft Word use-after-free allows remote code execution when a user opens crafted content (fixed 10 Nov 2026)

Link for people: https://infrastack.ai/live/CVE-2026-112735 (this .md is for agents)

A use-after-free bug in Microsoft Office Word lets an unauthorized attacker run code on a machine over the network. The sources give a CVSS score of 8.8 and no fixed version.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Microsoft 365 Apps for Enterprise affected >= 16.0.1, below the 10 Nov 2026 build fixed Current Channel 2610 build 20527.20196
- vendor:Office LTSC 2024 affected >= 16.0.0, < 16.0.17932.21140 fixed 16.0.17932.21140
- vendor:Office LTSC 2021 affected >= 16.0.1, < 16.0.14334.21048 fixed 16.0.14334.21048
- vendor:Office for Mac (365, LTSC 2021, LTSC 2024) affected < 16.115.26110837 fixed 16.115.26110837

## How to check

In Word: File > Account > About Word (or Help > About on Mac) and compare the build with the fixed builds in the fix field. Fleet check: Office build below the 10 Nov 2026 release for its channel means exposed. Microsoft's CVSS vector needs the user to open a crafted file or content (UI:R).

## Fix

Update Office to the 10 Nov 2026 security release: Current Channel 2610 build 20527.20196 or later; Monthly Enterprise 2610 build 20527.20194, 2609 build 20430.20264, 2608 build 20326.20320; Office LTSC 2024 16.0.17932.21140; Office LTSC 2021 16.0.14334.21048; Office 2019 volume 1808 build 10417.20236 (listed in the same release, not in the CNA affected list). Mac (365, LTSC 2021/2024): 16.115.26110837.

## Timeline

- 2026-11-10T19:24:31+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112735
- 2026-11-11T00:17:19+00:00 analyst https://app.opencve.io/cve/CVE-2026-112735 — Microsoft Learn Office security release notes (Nov 10 2026) list this CVE under Word; fixed builds taken from that page and the Microsoft CNA data (via OpenCVE). MSRC page itself not readable by my tools. No exploitation or PoC seen; no X chatter.

## Documents

- [describes] OpenCVE: CVE-2026-112735 (mirrors Microsoft CNA record) https://app.opencve.io/cve/CVE-2026-112735
- [fix] Release notes for Microsoft Office security updates (Nov 10, 2026) https://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates

## From the sources

Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_