---
id: "CVE-2014-9163"
kind: "vulnerability"
aliases: ["CVE-2014-9163"]
title: "Adobe Flash Player: Adobe Flash Player Stack-Based Buffer Overflow Vulnerability"
severity: "critical"
cvss: 10.0
epss: 0.20724
exploited: true
status: "open"
category: "runtime"
products: [{"name": "Adobe Flash Player", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["adobe-flash-player", "browsers", "exploited", "runtime", "windows"]
not_affected_if: ["flash-not-installed"]
published_at: "2014-12-10T21:59:35+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-2014-9163", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2014-9163", "first_seen_at": "2026-10-23T19:13:45+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-9163", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Adobe Flash Player: Adobe Flash Player Stack-Based Buffer Overflow Vulnerability

Adobe Flash Player has a stack-based buffer overflow that lets an attacker run code remotely. CISA lists it as actively exploited in the wild.

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

## Affected

- vendor:Adobe Flash Player affected ? fixed ?

## How to check

Check whether Adobe Flash Player is installed on any machine or browser in use, for example by looking for the Flash plugin in browser add-on lists.

## Fix

Remove Adobe Flash Player; CISA says the product is end-of-life and should be disconnected if still in use.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2014-9163
- 2026-10-23T19:13:45+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2014-9163
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2014-9163

## From the sources

Stack-based buffer overflow in Adobe Flash Player before 13.0.0.259 and 14.x and 15.x before 15.0.0.246 on Windows and OS X and before 11.2.202.425 on Linux allows attackers to execute arbitrary code via unspecified vectors, as exploited in the wild in December 2014.

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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_