---
id: "CVE-2015-8651"
kind: "vulnerability"
aliases: ["CVE-2015-8651"]
title: "Integer overflow in Adobe Flash Player before 18.0.0.324 and 19.x and 20.x before 20.0.0.267 on Windows and OS X and\u2026"
severity: "critical"
cvss: 9.3
epss: 0.67698
exploited: true
status: "open"
category: "runtime"
products: [{"name": "adobe air sdk", "fixed": ["20.0.0.233"], "affected": "< 20.0.0.233", "ecosystem": "vendor"}, {"name": "adobe air sdk \\& compiler", "fixed": ["20.0.0.233"], "affected": "< 20.0.0.233", "ecosystem": "vendor"}, {"name": "adobe flash player", "fixed": ["11.2.202.559"], "affected": "< 11.2.202.559", "ecosystem": "vendor"}, {"name": "adobe air", "fixed": ["20.0.0.233"], "affected": "< 20.0.0.233", "ecosystem": "vendor"}, {"name": "adobe flash player", "fixed": ["18.0.0.324"], "affected": "< 18.0.0.324", "ecosystem": "vendor"}, {"name": "adobe flash player", "fixed": ["20.0.0.267"], "affected": ">= 19.0.0.185, < 20.0.0.267", "ecosystem": "vendor"}, {"name": "redhat enterprise linux desktop", "fixed": [], "affected": "= 5.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux desktop", "fixed": [], "affected": "= 6.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux server", "fixed": [], "affected": "= 5.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux server", "fixed": [], "affected": "= 6.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux workstation", "fixed": [], "affected": "= 5.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux workstation", "fixed": [], "affected": "= 6.0", "ecosystem": "vendor"}, {"name": "opensuse evergreen", "fixed": [], "affected": "= 11.4", "ecosystem": "vendor"}, {"name": "opensuse", "fixed": [], "affected": "= 13.1", "ecosystem": "vendor"}, {"name": "opensuse", "fixed": [], "affected": "= 13.2", "ecosystem": "vendor"}, {"name": "suse linux enterprise desktop", "fixed": [], "affected": "= 11", "ecosystem": "vendor"}, {"name": "suse linux enterprise desktop", "fixed": [], "affected": "= 12", "ecosystem": "vendor"}, {"name": "suse linux enterprise workstation extension", "fixed": [], "affected": "= 12", "ecosystem": "vendor"}, {"name": "hp insight control", "fixed": ["7.6"], "affected": "< 7.6", "ecosystem": "vendor"}, {"name": "hp insight control server provisioning", "fixed": ["7.6"], "affected": "< 7.6", "ecosystem": "vendor"}, {"name": "hp matrix operating environment", "fixed": [], "affected": "= 7.6", "ecosystem": "vendor"}, {"name": "hp system management homepage", "fixed": ["7.6"], "affected": "< 7.6", "ecosystem": "vendor"}, {"name": "hp systems insight manager", "fixed": ["7.6"], "affected": "< 7.6", "ecosystem": "vendor"}, {"name": "hp version control repository manager", "fixed": ["7.6"], "affected": "< 7.6", "ecosystem": "vendor"}, {"name": "Adobe Flash Player", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["adobe-flash-player", "browsers", "exploited", "macos", "runtime", "windows"]
not_affected_if: ["no-flash-installed"]
published_at: "2015-12-28T23:59:19+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-24T00:09:51+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2015-8651", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2015-8651", "first_seen_at": "2026-10-23T19:13:45+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-8651", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# Integer overflow in Adobe Flash Player before 18.0.0.324 and 19.x and 20.x before 20.0.0.267 on Windows and OS X and…

Adobe Flash Player has an integer overflow that lets an attacker run code on the victim's machine. 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 air sdk affected < 20.0.0.233 fixed 20.0.0.233
- vendor:adobe air sdk \& compiler affected < 20.0.0.233 fixed 20.0.0.233
- vendor:adobe flash player affected < 11.2.202.559 fixed 11.2.202.559
- vendor:adobe air affected < 20.0.0.233 fixed 20.0.0.233
- vendor:adobe flash player affected < 18.0.0.324 fixed 18.0.0.324
- vendor:adobe flash player affected >= 19.0.0.185, < 20.0.0.267 fixed 20.0.0.267
- vendor:redhat enterprise linux desktop affected = 5.0 fixed ?
- vendor:redhat enterprise linux desktop affected = 6.0 fixed ?
- vendor:redhat enterprise linux server affected = 5.0 fixed ?
- vendor:redhat enterprise linux server affected = 6.0 fixed ?
- vendor:redhat enterprise linux workstation affected = 5.0 fixed ?
- vendor:redhat enterprise linux workstation affected = 6.0 fixed ?
- vendor:opensuse evergreen affected = 11.4 fixed ?
- vendor:opensuse affected = 13.1 fixed ?
- vendor:opensuse affected = 13.2 fixed ?
- vendor:suse linux enterprise desktop affected = 11 fixed ?
- vendor:suse linux enterprise desktop affected = 12 fixed ?
- vendor:suse linux enterprise workstation extension affected = 12 fixed ?
- vendor:hp insight control affected < 7.6 fixed 7.6
- vendor:hp insight control server provisioning affected < 7.6 fixed 7.6
- vendor:hp matrix operating environment affected = 7.6 fixed ?
- vendor:hp system management homepage affected < 7.6 fixed 7.6
- vendor:hp systems insight manager affected < 7.6 fixed 7.6
- vendor:hp version control repository manager affected < 7.6 fixed 7.6
- vendor:Adobe Flash Player affected ? fixed ?

## How to check

Check whether Adobe Flash Player is installed on any machine or browser the team uses.

## Fix

Remove Adobe Flash Player; it is end-of-life and no longer receives security updates.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2015-8651
- 2026-10-23T19:13:45+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2015-8651
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2015-8651

## From the sources

Integer overflow in Adobe Flash Player before 18.0.0.324 and 19.x and 20.x before 20.0.0.267 on Windows and OS X and before 11.2.202.559 on Linux, Adobe AIR before 20.0.0.233, Adobe AIR SDK before 20.0.0.233, and Adobe AIR SDK & Compiler before 20.0.0.233 allows attackers to execute arbitrary code via unspecified vectors.

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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_