CVE-2017-2938: Adobe Flash Player versions 24.0.0.186 and earlier have a security bypass vulnerability related to handling TC

Q: How do I fix CVE-2017-2938?

flash player: upgrade to newer than 24.0.0.186; flash player: upgrade to newer than 24.0.0.186; flash player: upgrade to newer than 24.0.0.186. Exact commands for each OS are on this page.

Q: Is CVE-2017-2938 being exploited?

CVE-2017-2938 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-2017-2938 affect?

CVE-2017-2938 affects flash player, flash player, flash player. Severity is medium (CVSS 6.5). Adobe Flash Player versions 24.0.0.186 and earlier have a security bypass vulnerability related to handling TCP connections.

Q: How urgent is CVE-2017-2938?

Priority 46/100. EPSS top 8%: very likely to be exploited

This month

MEDIUM 6.5UPGRADEUPGRADEUPGRADE

CVE-2017-2938 is a medium-severity flaw (CVSS 6.5) affecting flash player, 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 24.0.0.186 and earlier have a security bypass vulnerability related to handling TCP connections.

Why this priority

EPSS top 8%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	5.1% (top 8%)
CISA exploited list	No
Published	2017-01-11
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

2017-01-11 04:59 UTCPublished CVE record published
2026-06-17 01:17 UTCUpdated Record last modified

adobe flash player UPGRADE

Affected: <= 24.0.0.186

Fixed in: newer than 24.0.0.186

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 24.0.0.186 (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: <= 24.0.0.186

Fixed in: newer than 24.0.0.186

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 24.0.0.186 (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: <= 24.0.0.186

Fixed in: newer than 24.0.0.186

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 24.0.0.186 (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: <= 24.0.0.186

Fixed in: newer than 24.0.0.186

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 24.0.0.186 (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-2017-2938?

flash player: upgrade to newer than 24.0.0.186; flash player: upgrade to newer than 24.0.0.186; flash player: upgrade to newer than 24.0.0.186. Exact commands for each OS are on this page.

Is CVE-2017-2938 being exploited?

CVE-2017-2938 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-2017-2938 affect?

CVE-2017-2938 affects flash player, flash player, flash player. Severity is medium (CVSS 6.5). Adobe Flash Player versions 24.0.0.186 and earlier have a security bypass vulnerability related to handling TCP connections.

How urgent is CVE-2017-2938?

Priority 46/100. EPSS top 8%: very likely to be exploited

Software pages

Adobe Flash vulnerabilities

Related CVEs

CVE-2018-15982 HIGH 7.8 EXPLOITED UPGRADE UPGRADE Adobe Flash Player Use-After-Free Vulnerability
CVE-2016-1019 CRITICAL 9.8 EXPLOITED UPGRADE UPGRADE Adobe Flash Player Arbitrary Code Execution Vulnerability
CVE-2016-4117 CRITICAL 9.8 EXPLOITED UPGRADE MITIGATE Adobe Flash Player Arbitrary Code Execution Vulnerability
CVE-2011-0627 HIGH 8.8 UPGRADE Adobe Flash Player before 10.3.181.14 on Windows, Mac OS X, Linux, and Solaris and before 10.3.185.21 on Andro
CVE-2020-9746 HIGH 7.0 UPGRADE UPGRADE Adobe Flash Player version 32.0.0.433 (and earlier) are affected by an exploitable NULL pointer dereference vu

References

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