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CVE-2017-11292: Adobe Flash Player Type Confusion Vulnerability

85
Patch now
HIGH 8.8EXPLOITEDWATCHLISTUPGRADEUPGRADEUPGRADE

CVE-2017-11292 is a high-severity flaw (CVSS 8.8) affecting flash player desktop runtime, flash player, flash player, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Adobe Flash Player version 27.0.0.159 and earlier has a flawed bytecode verification procedure, which allows for an untrusted value to be used in the calculation of an array index. This can lead to type confusion, and successful exploitation could lead to arbitrary code execution.

Why this priority

  • High severity
  • EPSS top 4%: very likely to be exploited
  • Exploited in the wild (CISA KEV)
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance11.9% (top 4%)
CISA exploited listYes, fix due 2022-03-24
WeaknessCWE-843
Published2017-10-22
Last modified2026-06-17
Publisher (CNA): Adobe Systems Incorporated · Vendor: adobe · redhat

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

adobe flash player desktop runtime UPGRADE
Affected: <= 27.0.0.159
Fixed in: newer than 27.0.0.159
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy flash-player-desktop-runtime || rpm -q flash-player-desktop-runtime || flash-player-desktop-runtime --version
2. UPGRADE to newer than 27.0.0.159 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade flash-player-desktop-runtime
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade flash-player-desktop-runtime
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
adobe flash player UPGRADE
Affected: <= 27.0.0.130
Fixed in: newer than 27.0.0.130
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy flash-player || rpm -q flash-player || flash-player --version
2. UPGRADE to newer than 27.0.0.130 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade flash-player
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade flash-player
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
adobe flash player UPGRADE
Affected: <= 27.0.0.130
Fixed in: newer than 27.0.0.130
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy flash-player || rpm -q flash-player || flash-player --version
2. UPGRADE to newer than 27.0.0.130 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade flash-player
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade flash-player
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
adobe flash player UPGRADE
Affected: <= 27.0.0.159
Fixed in: newer than 27.0.0.159
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy flash-player || rpm -q flash-player || flash-player --version
2. UPGRADE to newer than 27.0.0.159 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade flash-player
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade flash-player
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
redhat enterprise linux desktop MITIGATE
Affected: 6.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
redhat enterprise linux server MITIGATE
Affected: 6.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.
Fedora 46 · shotcut · FIXED · 26.10.30-1.fc46 · FEDORA-2026-7787c7fc2d · source
sudo dnf upgrade --advisory=FEDORA-2026-7787c7fc2d
RHEL 6 Supplementary · flash-plugin · FIXED · flash-plugin-27.0.0.170-1.el6_9
sudo dnf upgrade --advisory=RHSA-2017:2899 rpm -q flash-plugin
Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-11292?

flash player desktop runtime: upgrade to newer than 27.0.0.159; flash player: upgrade to newer than 27.0.0.130; flash player: upgrade to newer than 27.0.0.130. Exact commands for each OS are on this page.

Is CVE-2017-11292 being exploited?

Yes. CVE-2017-11292 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2017-11292 affect?

CVE-2017-11292 affects flash player desktop runtime, flash player, flash player. Severity is high (CVSS 8.8). Adobe Flash Player version 27.0.0.159 and earlier has a flawed bytecode verification procedure, which allows for an untrusted value to be used in the calculation of an array index. This can lead to type confusion, and successful exploitatio

How urgent is CVE-2017-11292?

Priority 85/100. High severity; EPSS top 4%: very likely to be exploited; Exploited in the wild (CISA KEV); On your watchlist

Software pages

Adobe Flash vulnerabilities

Related CVEs

References

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