---
id: "CVE-2019-1297"
kind: "vulnerability"
aliases: ["CVE-2019-1297"]
title: "Microsoft Excel: Microsoft Excel Remote Code Execution Vulnerability"
severity: "critical"
cvss: 9.3
epss: 0.21805
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Microsoft Excel", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["excel", "exploited", "infrastructure", "microsoft-office", "windows"]
not_affected_if: ["excel-not-installed"]
published_at: "2019-09-11T22:15:18+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-1297", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2019-1297", "first_seen_at": "2026-10-23T19:13:44+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-1297", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Microsoft Excel: Microsoft Excel Remote Code Execution Vulnerability

Microsoft Excel fails to properly handle objects in memory, which allows remote code execution. An attacker who gets a victim to open a crafted file can run code with the victim's privileges.

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

## Affected

- vendor:Microsoft Excel affected ? fixed ?

## How to check

Check the installed Microsoft Excel build against Microsoft's security update guide for CVE-2019-1297; unknown whether the sources give a specific version or file to inspect.

## Fix

Apply the Microsoft security update for CVE-2019-1297 per vendor instructions (CISA required action). Exact fixed build: unknown.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-1297
- 2026-10-23T19:13:44+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2019-1297
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2019-1297

## From the sources

A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory, aka 'Microsoft Excel Remote Code Execution Vulnerability'.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_