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Fencer Vulns
high 7.0

CVE-2020-9746 json

Exploitable NULL pointer deref could lead to arbitrary code execution

published 2020-10-14 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30526

cvss
7.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
4.3%
EPSS 4.3% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

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.

Patch / fix

  • adobe flash_player 32.0.0.387, 32.0.0.433
  • flashplugin-nonfree Ubuntu 16.04 LTS 32.0.0.445ubuntu0.16.04.1
  • flashplugin-nonfree Ubuntu 18.04 LTS 32.0.0.445ubuntu0.18.04.1
  • flashplugin-nonfree Ubuntu 20.04 LTS 32.0.0.445ubuntu0.20.04.1

ubuntu advisories UBUNTU-CVE-2020-9746

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 32.0.0.445-1.el6_10

red hat advisories RHSA-2020:4251

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-2020-9746 updated cvss 8.8

flash-plugin: Arbitrary Code Execution vulnerability (APSB20-58)

  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) flash-plugin 32.0.0.445-1.el6_10 Red Hat Enterprise Linux Server Supplementary (v. 6) flash-plugin 32.0.0.445-1.el6_10 Red Hat Enterprise Linux Workstation Supplementary (v. 6) flash-plugin 32.0.0.445-1.el6_10
    fixed: vendor fix RHSA-2020:4251

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
18 mo ago

Exploit prediction

4.25% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • 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.