---
id: "CVE-2026-112715"
page: "https://infrastack.ai/live/CVE-2026-112715"
kind: "vulnerability"
aliases: ["CVE-2026-112715"]
title: "Microsoft Word: heap buffer overflow lets a remote attacker run code"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "Microsoft Office LTSC 2021", "fixed": ["16.0.14334.21048"], "affected": ">= 16.0.1, < 16.0.14334.21048", "ecosystem": "vendor"}, {"name": "Microsoft Office LTSC 2024", "fixed": ["16.0.17932.21140"], "affected": ">= 16.0.0, < 16.0.17932.21140", "ecosystem": "vendor"}, {"name": "Microsoft Office for Mac", "fixed": ["16.115.26110837"], "affected": "< 16.115.26110837", "ecosystem": "vendor"}, {"name": "Microsoft 365 Apps for Enterprise", "fixed": [], "affected": ">= 16.0.1, before the current release at aka.ms/OfficeSecurityReleases", "ecosystem": "vendor"}]
ecosystems: []
tags: ["macos", "microsoft-office", "other", "windows", "word"]
not_affected_if: []
published_at: "2026-11-10T19:18:29+00:00"
first_seen_at: "2026-11-10T19:24:29+00:00"
updated_at: "2026-11-11T00:23:44+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112715", "first_seen_at": "2026-11-10T19:24:29+00:00"}, {"source": "analyst", "url": "https://nvd.nist.gov/vuln/detail/cve-2026-112715", "first_seen_at": "2026-11-11T00:23:44+00:00", "cites": ["https://nvd.nist.gov/vuln/detail/cve-2026-112715"]}]
exploit_sources: []
---

# Microsoft Word: heap buffer overflow lets a remote attacker run code

Link for people: https://infrastack.ai/live/CVE-2026-112715 (this .md is for agents)

A heap-based buffer overflow in Microsoft Office Word lets an unauthorized attacker execute code over a network. Microsoft rates it CVSS 8.8. The vector is AV:N/AC:L/PR:N/UI:R, so the user has to do something, most likely open a crafted file. Microsoft's exact trigger is not in the sources I could read. Fixed builds are listed in the NVD record from Microsoft's CNA data. No exploitation or public PoC was found.

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

## Affected

- vendor:Microsoft Office LTSC 2021 affected >= 16.0.1, < 16.0.14334.21048 fixed 16.0.14334.21048
- vendor:Microsoft Office LTSC 2024 affected >= 16.0.0, < 16.0.17932.21140 fixed 16.0.17932.21140
- vendor:Microsoft Office for Mac affected < 16.115.26110837 fixed 16.115.26110837
- vendor:Microsoft 365 Apps for Enterprise affected >= 16.0.1, before the current release at aka.ms/OfficeSecurityReleases fixed no fixed version listed

## How to check

Open Word, then File > Account > About Word, and compare the build with the fixed versions. Windows: Office LTSC 2021 needs 16.0.14334.21048 or later; Office LTSC 2024 needs 16.0.17932.21140 or later; Microsoft 365 Apps needs the current build listed at https://aka.ms/OfficeSecurityReleases. Mac: Office 365 for Mac and LTSC 2021/2024 for Mac need 16.115.26110837 or later.

## Fix

Update Office to the fixed build: LTSC 2021 16.0.14334.21048, LTSC 2024 16.0.17932.21140, Office for Mac 16.115.26110837, Microsoft 365 Apps to the current release per aka.ms/OfficeSecurityReleases. This comes from the NVD record, not read on the MSRC page.

## Timeline

- 2026-11-10T19:24:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112715
- 2026-11-11T00:23:44+00:00 analyst https://nvd.nist.gov/vuln/detail/cve-2026-112715 — MSRC Update Guide page is JS-only and could not be read (web-cli and the CVRF API returned nothing), so nothing is verified. Versions are from the NVD record, which carries Microsoft's CNA data. No exploitation or PoC found; Rapid7 says not in KEV. Sibling CVEs 112721-112724 have the same text.

## Documents

- [describes] NVD: CVE-2026-112715 (CNA data from Microsoft) https://nvd.nist.gov/vuln/detail/cve-2026-112715

## From the sources

Heap-based buffer overflow 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_