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CVE-2020-9746: Adobe Flash Player version 32.0.0.433 (and earlier) are affected by an exploitable NULL pointer dereference vu

47
This month
HIGH 7.0UPGRADEUPGRADEUPGRADE

CVE-2020-9746 is a high-severity flaw (CVSS 7.0) 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 version 32.0.0.433 (and earlier) are affected by an exploitable NULL pointer dereference vulnerability that could result in a crash and arbitrary code execution. Exploitation of this issue requires an attacker to insert malicious strings in an HTTP response that is by default delivered over TLS/SSL.

Why this priority

  • High severity
  • EPSS top 9%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score7.0 (High)
Attack vectorLocal
Attack complexityHigh
Privileges neededNone
User interactionRequired
EPSS exploit chance4.3% (top 9%)
CISA exploited listNo
WeaknessCWE-476
Published2020-10-14
Last modified2026-06-17
Publisher (CNA): Adobe Systems Incorporated · Vendor: adobe

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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 UPGRADE
Affected: <= 32.0.0.433
Fixed in: newer than 32.0.0.433
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 32.0.0.433 (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: < 32.0.0.433
Fixed in: 32.0.0.433
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 32.0.0.433 (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: < 32.0.0.387
Fixed in: 32.0.0.387
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 32.0.0.387 (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: < 32.0.0.387
Fixed in: 32.0.0.387
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 32.0.0.387 (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-2020-9746?

flash player: upgrade to newer than 32.0.0.433; flash player: upgrade to 32.0.0.433; flash player: upgrade to 32.0.0.387. Exact commands for each OS are on this page.

Is CVE-2020-9746 being exploited?

CVE-2020-9746 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-2020-9746 affect?

CVE-2020-9746 affects flash player, flash player, flash player. Severity is high (CVSS 7.0). Adobe Flash Player version 32.0.0.433 (and earlier) are affected by an exploitable NULL pointer dereference vulnerability that could result in a crash and arbitrary code execution. Exploitation of this issue requires an attacker to insert m

How urgent is CVE-2020-9746?

Priority 47/100. High severity; EPSS top 9%: very likely to be exploited

Software pages

Adobe Flash vulnerabilities

Related CVEs

References

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