---
id: "CVE-2015-2502"
kind: "vulnerability"
aliases: ["CVE-2015-2502"]
title: "Microsoft Internet Explorer: Microsoft Internet Explorer Memory Corruption Vulnerability"
severity: "critical"
cvss: 9.3
epss: 0.51001
exploited: true
status: "open"
category: "other"
products: [{"name": "Microsoft Internet Explorer", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["browser", "exploited", "internet-explorer", "other", "windows"]
not_affected_if: ["no-internet-explorer-installed"]
published_at: "2015-08-19T10:59:00+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-2015-2502", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2015-2502", "first_seen_at": "2026-10-23T19:13:45+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-2502", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Microsoft Internet Explorer: Microsoft Internet Explorer Memory Corruption Vulnerability

Microsoft Internet Explorer has a memory corruption flaw that lets an attacker run code or crash the browser. It is listed in CISA's Known Exploited Vulnerabilities catalog, so attacks have been seen in the wild.

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

## Affected

- vendor:Microsoft Internet Explorer affected ? fixed ?

## How to check

Check whether Internet Explorer is installed and which version it is, for example with the Windows 'winver' or Internet Explorer About dialog; unknown whether the sources give a specific file or setting.

## Fix

Apply the Microsoft security update for Internet Explorer per vendor instructions, as CISA requires; unknown which exact patch or version the sources name.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2015-2502
- 2026-10-23T19:13:45+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2015-2502
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2015-2502

## From the sources

Microsoft Internet Explorer 7 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Memory Corruption Vulnerability," as exploited in the wild in August 2015.

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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_