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Fencer Intel
high 8.8

CVE-2020-15969 json

Use after free in WebRTC in Google Chrome prior to 86.0.4240.75 allowed a remote attacker to potentially exploit heap corruption via a craf…

published 6y ago modified 4mo ago also EUVD-2020-7940

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

Use after free in WebRTC in Google Chrome prior to 86.0.4240.75 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Patch / fix

  • Google Chrome 86.0.4240.75
  • chromium Debian 14, Debian 13, Debian 12 87.0.4280.88-0.1
  • firefox-esr Debian 14, Debian 13, Debian 12 78.4.0esr-1
  • thunderbird Debian 14, Debian 13, Debian 12 1:78.4.0-1

debian advisories DEBIAN-CVE-2020-15969

  • firefox Ubuntu 16.04 LTS 82.0+build2-0ubuntu0.16.04.5
  • firefox Ubuntu 18.04 LTS 82.0+build2-0ubuntu0.18.04.1
  • firefox Ubuntu 20.04 LTS 82.0+build2-0ubuntu0.20.04.1
  • thunderbird Ubuntu 18.04 LTS 1:78.8.1+build1-0ubuntu0.18.04.1
  • thunderbird Ubuntu 20.04 LTS 1:78.7.1+build1-0ubuntu0.20.04.1
  • chromium-browser Ubuntu 16.04 LTS 86.0.4240.75-0ubuntu0.16.04.1
  • chromium-browser Ubuntu 18.04 LTS 86.0.4240.75-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2020-15969

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

  • thunderbird RHEL 6 78.4.0-1.el6_10
  • thunderbird RHEL 8 78.4.0-1.el8_3
  • thunderbird RHEL 7 78.4.0-1.el7_9
  • firefox RHEL 6 78.4.0-2.el6_10
  • firefox RHEL 8 78.4.0-1.el8_2
  • firefox RHEL 7 78.4.0-1.el7_9
  • chromium-browser RHEL 6 EXTRAS 86.0.4240.75-1.el6_10
  • thunderbird RHEL 8.0 E4S 78.4.0-1.el8_0

red hat advisories RHSA-2020:4947RHSA-2020:4944RHSA-2020:4945RHSA-2020:4913RHSA-2020:4909RHSA-2020:4330

  • mozilla-nspr SLE Module for Basesystem 15 SP2, SLE Module for Basesystem 15 SP1 4.25.1-3.15.2
  • MozillaThunderbird SLE Workstation Extension 15 SP2, SLE Workstation Extension 15 SP1 78.4.0-3.99.1
  • MozillaFirefox SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +15 more 78.4.0-112.28.1
  • MozillaFirefox SLE Module for Desktop Applications 15 SP1 78.4.0-3.113.3
  • MozillaFirefox SLE Module for Desktop Applications 15 SP2 78.4.0-8.11.2
  • MozillaFirefox SLES 11 SP4-LTSS 78.4.0-78.99.1

suse advisories SUSE-SU-2020:3091-1SUSE-SU-2020:3053-1SUSE-SU-2020:14522-1SUSE-SU-2020:3022-1SUSE-SU-2020:3021-1

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 92.0-1.2
  • MozillaThunderbird openSUSE Tumbleweed 91.1.1-1.1
  • chromium openSUSE Tumbleweed 93.0.4577.82-1.1
  • chromium openSUSE Tumbleweed 113.0.5672.92-1.1
  • gn Package Hub 15 SP2 0.1807-bp152.2.3.4
  • chromium Package Hub 15 SP2 86.0.4240.183-bp152.2.26.1
  • mozilla-nspr openSUSE Leap 15.1 4.25.1-lp151.2.13.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10600-1openSUSE-SU-2024:10601-1openSUSE-SU-2024:10681-1openSUSE-SU-2024:12948-1openSUSE-SU-2020:1829-1

  • firefox Alpine 3.23, Alpine 3.22, Alpine 3.21 +9 more 82.0-r0
  • librewolf Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 82.0-r0
  • firefox-esr Alpine 3.23, Alpine 3.22, Alpine 3.21 +9 more 78.5.0-r0
  • thunderbird Alpine 3.23, Alpine 3.22, Alpine 3.21 +5 more 78.5.1-r0

alpine advisories ALPINE-CVE-2020-15969

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • chromium Arch Linux 86.0.4240.75-1
  • firefox Arch Linux 82.0-1

arch linux advisories AVG-1238AVG-1256

Is CVE-2020-15969 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

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-2020-15969 updated cvss 8.8

chromium-browser: Use after free in WebRTC

  • Red Hat Enterprise Linux 5 firefox, thunderbird
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) firefox 78.4.0-1.el8_2, thunderbird 78.4.0-1.el8_3
    fixed: vendor fix RHSA-2020:4317
  • Red Hat Enterprise Linux AppStream E4S (v. 8.0) firefox 78.4.0-1.el8_0, thunderbird 78.4.0-1.el8_0
    fixed: vendor fix RHSA-2020:4311
  • Red Hat Enterprise Linux AppStream EUS (v. 8.1) firefox 78.4.0-1.el8_1, thunderbird 78.4.0-1.el8_1
    fixed: vendor fix RHSA-2020:4315
  • Red Hat Enterprise Linux AppStream EUS (v. 8.2) thunderbird 78.4.0-1.el8_2
    fixed: vendor fix RHSA-2020:4948
  • Red Hat Enterprise Linux Client (v. 7) firefox 78.4.0-1.el7_9, thunderbird 78.4.0-1.el7_9 Red Hat Enterprise Linux Client Optional (v. 7) firefox 78.4.0-1.el7_9
    fixed: vendor fix RHSA-2020:4310
  • Red Hat Enterprise Linux Desktop (v. 6) firefox 78.4.0-2.el6_10, thunderbird 78.4.0-1.el6_10 Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 78.4.0-2.el6_10
    fixed: vendor fix RHSA-2020:4330
  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 86.0.4240.75-1.el6_10
    fixed: vendor fix RHSA-2020:4235
show 12 more
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 78.4.0-2.el6_10
    fixed: vendor fix RHSA-2020:4330
  • Red Hat Enterprise Linux HPC Node Supplementary (v. 6) chromium-browser 86.0.4240.75-1.el6_10
    fixed: vendor fix RHSA-2020:4235
  • Red Hat Enterprise Linux Server (v. 6) firefox 78.4.0-2.el6_10
    fixed: vendor fix RHSA-2020:4330
  • Red Hat Enterprise Linux Server (v. 7) firefox 78.4.0-1.el7_9
    fixed: vendor fix RHSA-2020:4310
  • Red Hat Enterprise Linux Server Optional (v. 6) firefox 78.4.0-2.el6_10, thunderbird 78.4.0-1.el6_10
    fixed: vendor fix RHSA-2020:4330
  • Red Hat Enterprise Linux Server Optional (v. 7) firefox 78.4.0-1.el7_9, thunderbird 78.4.0-1.el7_9
    fixed: vendor fix RHSA-2020:4310
  • Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 86.0.4240.75-1.el6_10
    fixed: vendor fix RHSA-2020:4235
  • Red Hat Enterprise Linux Workstation (v. 6) firefox 78.4.0-2.el6_10, thunderbird 78.4.0-1.el6_10
    fixed: vendor fix RHSA-2020:4330
  • Red Hat Enterprise Linux Workstation (v. 7) firefox 78.4.0-1.el7_9, thunderbird 78.4.0-1.el7_9
    fixed: vendor fix RHSA-2020:4310
  • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 78.4.0-2.el6_10
    fixed: vendor fix RHSA-2020:4330
  • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 78.4.0-1.el7_9
    fixed: vendor fix RHSA-2020:4310
  • Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 86.0.4240.75-1.el6_10
    fixed: vendor fix RHSA-2020:4235

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

1.74% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
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 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Google Chrome

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel 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.