Skip to content
Noroxi
NVD / CVE Program· CNA Chrome

CVE-2020-6418: Type confusion in V8 in Google Chrome prior to 80.0.3987.122 allowed a remote attacker to potentially exploit heap corruption via a crafted

Noroxi assessment

Priority: Now (action score 89/100)

  • CISA has confirmed exploitation in the wild (Nov 3, 2021). Remediation deadline for US federal agencies: May 3, 2022.
  • A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
  • Probability of exploitation in the next 30 days: 78.8% (FIRST EPSS); higher than 99.5% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: chromium (Debian:12) 80.0.3987.122-1; chromium (openSUSE:Leap 15.1) 80.0.3987.122-lp151.2.66.1; chromium-browser (Red Hat:rhel_extras:6) 0:80.0.3987.122-1.el6_10.

Patch today or shut off access. Upgrade to chromium (Debian:12) 80.0.3987.122-1; chromium (openSUSE:Leap 15.1) 80.0.3987.122-lp151.2.66.1; chromium-browser (Red Hat:rhel_extras:6) 0:80.0.3987.122-1.el6_10 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

Type confusion in V8 in Google Chrome prior to 80.0.3987.122 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

HighCVSS 8.8 · v3.1KEVWeaponized Fix available
Published
Feb 27, 2020
Updated
Jun 16, 2026
EPSS
78.8% · 99th percentile

Report tools

JSON

Action score

89

Now

Patch today or shut off access.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
24 / 30 · 78.8%

CISA SSVC decision

Exploitation
active
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Nov 3, 2021. That signals real attacks, not theory.

Remediation deadline for US federal agencies: May 3, 2022.

Get told when this record changes

  • In CISA KEV: exploitation in the wild confirmed
  • Weaponized exploit exists
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2020-6418

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for google records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
googlechrome
fedoraprojectfedora
redhatenterprise linux desktop
redhatenterprise linux server
redhatenterprise linux workstation
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux10.0
  • debian debian linux9.0
  • fedoraproject fedora30
  • fedoraproject fedora31
  • google chromebefore 80.0.3987.122
  • redhat enterprise linux desktop6.0
  • redhat enterprise linux server6.0
  • redhat enterprise linux workstation6.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Chrome). Independent of NVD's CPE analysis and usually ahead of it.

  • Google Chrome

    • unspecified and later · before 80.0.3987.122affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12chromiumbefore 80.0.3987.122-180.0.3987.122-1
openSUSE:Leap 15.1chromiumbefore 80.0.3987.122-lp151.2.66.180.0.3987.122-lp151.2.66.1
Red Hat:rhel_extras:6chromium-browserbefore 0:80.0.3987.122-1.el6_100:80.0.3987.122-1.el6_10
Red Hat:rhel_extras:6chromium-browser-debuginfobefore 0:80.0.3987.122-1.el6_100:80.0.3987.122-1.el6_10
SUSE:Package Hub 12 SP3chromiumbefore 80.0.3987.122-34.180.0.3987.122-34.1

Same product

google: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-4863Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of boKEV
    95Now
  • CVE-2021-21224Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a craftKEV
    90Now
  • CVE-2018-17463Incorrect side effect annotation in V8 in Google Chrome prior to 70.0.3538.64 allowed a remote attacker to execute arbitrary code inside a sKEV
    90Now

Published before and after this one in the same product

  • ← EarlierCVE-2020-6386Feb 27, 2020 · Use after free in speech in Google Chrome prior to 80.0.3987.116 allowed a remote attacker to potentially exploit heap corruption via a craf
    36Monitor
  • ← EarlierCVE-2020-6407Feb 27, 2020 · Out of bounds memory access in streams in Google Chrome prior to 80.0.3987.122 allowed a remote attacker to potentially exploit heap corrupt
    36Monitor
  • Later →CVE-2020-6420Mar 23, 2020 · Insufficient policy enforcement in media in Google Chrome prior to 80.0.3987.132 allowed a remote attacker to bypass same origin policy via
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:chromium80.0.3987.122-1 · Debian:12Package registry (OSV)
opensuse:chromium80.0.3987.122-lp151.2.66.1 · openSUSE:Leap 15.1Package registry (OSV)
red hat:chromium-browser0:80.0.3987.122-1.el6_10 · Red Hat:rhel_extras:6Package registry (OSV)
red hat:chromium-browser-debuginfo0:80.0.3987.122-1.el6_10 · Red Hat:rhel_extras:6Package registry (OSV)
suse:chromium80.0.3987.122-34.1 · SUSE:Package Hub 12 SP3Package registry (OSV)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Exploit-DB entry ×1
  • Proof-of-concept repository on GitHub ×4

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entryremote2020-03-09
Metasploit moduleexploit/multi/browser/chrome_jscreate_sideeffectGoogle Chrome 80 JSCreate side-effect type confusion exploitexploit2020-02-19
Proof-of-concept repository on GitHubstars:02020-03-03
Proof-of-concept repository on GitHubstars:32020-06-13
Proof-of-concept repository on GitHubstars:32022-02-19
Proof-of-concept repository on GitHubstars:12022-03-21

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Metasploit-9 d
  2. Published
  3. First PoC+4 d
  4. CISA KEV+614 d
  5. TodayOct 27, 2026+2433 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records