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Fencer Vulns
critical 9.8

CVE-2020-9633 json

Adobe Flash Player Desktop Runtime 32.0.0.371 and earlier, Adobe Flash Player for Google Chrome 32.0.0.371 and earlier, and Adobe Flash Pla…

published 2020-06-12 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30419

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.7%
EPSS 7.7% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

Adobe Flash Player Desktop Runtime 32.0.0.371 and earlier, Adobe Flash Player for Google Chrome 32.0.0.371 and earlier, and Adobe Flash Player for Microsoft Edge and Internet Explorer 32.0.0.330 and earlier have an use after free vulnerability. Successful exploitation could lead to arbitrary code execution.

Patch / fix

  • flashplugin-nonfree Ubuntu 16.04 LTS 32.0.0.387ubuntu0.16.04.1
  • flashplugin-nonfree Ubuntu 18.04 LTS 32.0.0.387ubuntu0.18.04.1
  • flashplugin-nonfree Ubuntu 20.04 LTS 32.0.0.387ubuntu0.20.04.1

ubuntu advisories UBUNTU-CVE-2020-9633

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • flash-plugin RHEL 6 EXTRAS 32.0.0.387-1.el6_10

red hat advisories RHSA-2020:2547

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-9633 updated cvss 9.8

flash-plugin: Arbitrary Code Execution vulnerability (APSB20-30)

  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) flash-plugin 32.0.0.387-1.el6_10 Red Hat Enterprise Linux Server Supplementary (v. 6) flash-plugin 32.0.0.387-1.el6_10 Red Hat Enterprise Linux Workstation Supplementary (v. 6) flash-plugin 32.0.0.387-1.el6_10
    fixed: vendor fix RHSA-2020:2547

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

7.75% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • Adobe Adobe Flash Player

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.