CVE-2017-3099: Adobe Flash Player versions 26.0.0.131 and earlier have an exploitable memory corruption vulnerability in the

Q: How do I fix CVE-2017-3099?

flash player desktop runtime: upgrade to newer than 26.0.0.131; flash player: upgrade to newer than 26.0.0.120; flash player: upgrade to newer than 26.0.0.120. Exact commands for each OS are on this page.

Q: Is CVE-2017-3099 being exploited?

CVE-2017-3099 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-3099 affect?

CVE-2017-3099 affects flash player desktop runtime, flash player, flash player. Severity is high (CVSS 8.8). Adobe Flash Player versions 26.0.0.131 and earlier have an exploitable memory corruption vulnerability in the Action Script 3 raster data model. Successful exploitation could lead to arbitrary code execution.

Q: How urgent is CVE-2017-3099?

Priority 55/100. High severity; EPSS top 5%: very likely to be exploited

This week

HIGH 8.8UPGRADEUPGRADEUPGRADE

CVE-2017-3099 is a high-severity flaw (CVSS 8.8) affecting flash player desktop runtime, flash player, flash player. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Adobe Flash Player versions 26.0.0.131 and earlier have an exploitable memory corruption vulnerability in the Action Script 3 raster data model. Successful exploitation could lead to arbitrary code execution.

Why this priority

High severity
EPSS top 5%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	8.6% (top 5%)
CISA exploited list	No
Weakness	CWE-787
Published	2017-07-17
Last modified	2026-06-17

Publisher (CNA): Adobe Systems Incorporated · Vendor: adobe

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

Am I affected?

Timeline

2017-07-17 13:18 UTCPublished CVE record published
2026-06-17 01:17 UTCUpdated Record last modified

adobe flash player desktop runtime UPGRADE

Affected: <= 26.0.0.131

Fixed in: newer than 26.0.0.131

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 26.0.0.131 (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: <= 26.0.0.120

Fixed in: newer than 26.0.0.120

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 26.0.0.120 (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: <= 26.0.0.120

Fixed in: newer than 26.0.0.120

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 26.0.0.120 (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: <= 26.0.0.131

Fixed in: newer than 26.0.0.131

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 26.0.0.131 (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.

Verify at the official source NVD · CVE Program · 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-2017-3099?

flash player desktop runtime: upgrade to newer than 26.0.0.131; flash player: upgrade to newer than 26.0.0.120; flash player: upgrade to newer than 26.0.0.120. Exact commands for each OS are on this page.

Is CVE-2017-3099 being exploited?

CVE-2017-3099 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-3099 affect?

CVE-2017-3099 affects flash player desktop runtime, flash player, flash player. Severity is high (CVSS 8.8). Adobe Flash Player versions 26.0.0.131 and earlier have an exploitable memory corruption vulnerability in the Action Script 3 raster data model. Successful exploitation could lead to arbitrary code execution.

How urgent is CVE-2017-3099?

Priority 55/100. High severity; EPSS top 5%: very likely to be exploited

Software pages

Adobe Flash vulnerabilities

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References

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