Skip to content
Fencer Vulns
high 8.8

CVE-2020-6430 json

Type Confusion in V8 in Google Chrome prior to 81.0.4044.92 allowed a remote attacker to potentially exploit heap corruption via a crafted…

published 2020-04-13 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-27580

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

Type Confusion in V8 in Google Chrome prior to 81.0.4044.92 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Patch / fix

  • Google Chrome 81.0.4044.92
  • chromium Debian 14, Debian 13, Debian 12 81.0.4044.92-1

debian advisories DEBIAN-CVE-2020-6430

  • chromium-browser Ubuntu 16.04 LTS 81.0.4044.122-0ubuntu0.16.04.1
  • chromium-browser Ubuntu 18.04 LTS 81.0.4044.122-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2020-6430

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

  • chromium-browser RHEL 6 EXTRAS 81.0.4044.92-2.el6_10

red hat advisories RHSA-2020:1487

  • chromium openSUSE Tumbleweed 93.0.4577.82-1.1
  • chromium openSUSE Tumbleweed 113.0.5672.92-1.1
  • chromium Package Hub 15 SP1 81.0.4044.92-bp151.3.66.1
  • chromium openSUSE Leap 15.1 81.0.4044.92-lp151.2.77.1

opensuse advisories openSUSE-SU-2024:10681-1openSUSE-SU-2024:12948-1openSUSE-SU-2020:0540-1openSUSE-SU-2020:0519-1

  • chromium Arch Linux 81.0.4044.92-1

arch linux advisories AVG-1128

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-2020-6430 updated cvss 8.8

chromium-browser: Type Confusion in V8

  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 81.0.4044.92-2.el6_10 Red Hat Enterprise Linux HPC Node Supplementary (v. 6) chromium-browser 81.0.4044.92-2.el6_10 Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 81.0.4044.92-2.el6_10 Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 81.0.4044.92-2.el6_10
    fixed: vendor fix RHSA-2020:1487

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

1.94% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • crbug.com https://crbug.com/1031479 referenced PoC, tagged "exploit" by a source, unverified

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
  • CWE-843 Access of Resource Using Incompatible Type
Technology feeds

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.