vciy

CVE-2020-6418

INDEX BUILT · 2026-09-20

No source can show you its own past. This one can.

Print this page to keep the view as it stands on this date. Everything hidden behind a disclosure opens, and every receipt prints with its value.

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.

CVE-2020-64184 of 4 sources documented this
75

rank 75 = 40 + 22 + 0 + 7 + 6

rank@v1 · act now

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.78808 · CISA KEV listed  ·  without this subject the record ranks 35

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 8.8, from NVD  ·  without this subject the record ranks 53

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 75

How much of the world it touches

NVD CPE configurations

8 products in the CPE ranges  ·  without this subject the record ranks 68

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 69

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$3.93Mover the next 30 days, if this record is yours
Movement-$186,000on 2025-11-21, the last material move, 9 months before this reading
Basisassumeda published average, not your estate

$3.93M = $4.99M incident cost x 1 exposure x 0.78808 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.78808EPSSKEV · LISTED
Severity8.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationin the wild · KEVreceipt
Defensefix version namedreceipt
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2025-11-21, 287 days at 0.79, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

This record is one instance of CWE-843, access of resource using incompatible type ('type confusion'). The index holds 923 prior instances of this class, 41 KEV-listed. taxonomy@v1

Full pattern panel

Color is a claim, not decoration:the hostile worldthe defenseno signal

Running Google Chrome? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

Watch this record

Matches your own product list against every record this index holds, and tells you when one of them moves.

What counts as a move

Set up a watchlist (needs a Practitioner account)

Record your call

Keep your verdict, your reason and the evidence together. The record takes its date when you save it.

AcceptDeferPatch by…Not affectedMitigated

Choose your verdict, then sign in or use an email link. Your first 100 records are free. Evidence is frozen when the record is created.

Private to your organization unless you share it. Put the proof link in your ticket so a reviewer can inspect the basis for your call. See how decision records work.

Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · no privileges required · user interaction required · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classCWE-843 Access of Resource Using Incompatible Type ('Type Confusion')receipt
Published consequencesCWE-843: Availability, Integrity, Confidentiality: Read Memory, Modify Memory, Execute Unauthorized Code or Commands, DoS: Crash, Exit, or Restart[email protected]
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed in80.0.3987.122receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.
CISA remediation statusoverdue since 2022-05-03receipt
CISA required actionApply updates per vendor instructions.receipt
Published to CISA KEV615 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2021-11-03.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 4 public repositories2020-03-03receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2021-11-03receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD8.8 HIGHreceipt
Exploit probability0.78808 · top 0.43% of all CVEsreceipt
Blast breadth6 products across 4 vendorsderived
Assigned byChromereceipt
Recorded changes111 · last 17 Sep 2026derived

Affected & Fixed Versions as published

Affected productGoogle Chromereceipt
Published rangesgoogle chrome < 80.0.3987.122; fedoraproject fedora 30; fedoraproject fedora 31; redhat enterprise linux desktop 6.0receipt
Show all 8 published ranges
google chrome < 80.0.3987.122
fedoraproject fedora 30
fedoraproject fedora 31
redhat enterprise linux desktop 6.0
redhat enterprise linux server 6.0
redhat enterprise linux workstation 6.0
debian linux 9.0
debian linux 10.0
Fixed in80.0.3987.122receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

Did this affect your environment?Answering needs an account.

What it is stated by the CNA

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. receipt

NVD's analysis a second authority

severity
8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
weakness
CWE-843
affected versions
google chrome < 80.0.3987.122; fedoraproject fedora 30; fedoraproject fedora 31; and 5 more, listed in full below
also scored by
8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

check it yourself chromereleases.googleblog.com crbug.com packetstormsecurity.com access.redhat.com debian.org security.gentoo.org +2 morereceipt

Dated events

2021-11-03Added to CISA KEV2022-02-04EPSS moved 0.25 to 0.922022-05-03CISA remediation due2026-06-15EPSS moved 0.86 to 0.79

Movement the material steps

14 Apr 20210.24581
4 Feb 20220.9177 · crossed 0.50 and 0.90
7 Mar 20230.97345 · scoring model v2023.03.01
17 Mar 20250.85009 · crossed 0.90 · scoring model v2025.03.14
18 Nov 20250.90525 · crossed 0.90
21 Nov 20250.86795 · crossed 0.90
15 Jun 20260.78808 · scoring model v2026.06.15
Show all 97 observations
14 Apr 20210.24581
4 Feb 20220.9177
1 Apr 20220.93592
7 Mar 20230.97345
16 Mar 20230.97330
1 Apr 20230.97190
30 Apr 20230.97223
8 May 20230.97299
16 May 20230.97357
31 May 20230.97341
15 Jun 20230.97340
2 Jul 20230.97387
8 Jul 20230.97374
15 Jul 20230.96927
2 Aug 20230.96928
19 Aug 20230.96670
6 Sep 20230.96693
24 Sep 20230.96739
11 Oct 20230.96869
27 Oct 20230.96978
8 Nov 20230.97103
14 Nov 20230.96876
29 Nov 20230.97116
1 Jan 20240.97185
18 Jan 20240.97129
3 Feb 20240.97085
22 Mar 20240.97146
26 Jul 20240.97056
9 Sep 20240.97082
12 Oct 20240.97109
24 Oct 20240.97074
17 Dec 20240.96495
2 Jan 20250.96436
18 Jan 20250.95931
20 Feb 20250.95988
10 Mar 20250.96485
17 Mar 20250.85009
18 Mar 20250.87665
19 Mar 20250.86377
20 Mar 20250.8519
23 Mar 20250.86377
31 Mar 20250.86219
6 Apr 20250.88423
7 Apr 20250.86219
16 Apr 20250.88423
17 Apr 20250.86219
1 May 20250.88423
3 May 20250.87021
4 May 20250.84596
15 May 20250.84785
17 May 20250.84596
1 Jun 20250.87092
6 Jun 20250.84596
28 Jun 20250.85116
1 Jul 20250.87483
4 Jul 20250.85116
20 Jul 20250.85498
1 Aug 20250.8777
6 Aug 20250.85498
11 Aug 20250.86368
16 Aug 20250.86766
1 Sep 20250.88422
4 Sep 20250.88734
5 Sep 20250.87163
15 Sep 20250.86785
1 Oct 20250.88734
4 Oct 20250.86785
22 Oct 20250.86944
25 Oct 20250.86795
1 Nov 20250.88742
4 Nov 20250.86795
18 Nov 20250.90525
21 Nov 20250.86795
1 Dec 20250.88742
4 Dec 20250.86795
22 Dec 20250.86614
23 Dec 20250.87869
30 Dec 20250.86279
1 Jan 20260.88038
4 Jan 20260.86279
13 Jan 20260.84953
14 Jan 20260.85305
25 Jan 20260.85051
1 Feb 20260.88045
4 Feb 20260.85051
15 Feb 20260.8593
1 Mar 20260.88648
4 Mar 20260.8593
9 Mar 20260.86438
30 Mar 20260.85227
19 Apr 20260.85672
12 May 20260.86438
22 May 20260.86592
25 May 20260.86438
3 Jun 20260.87146
4 Jun 20260.86373
15 Jun 20260.78808

97 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.78808Published2020-02-27Public PoC2020-03-03CISA KEV2021-11-03Index as of2026-09-04

Listed by CISA 615 days after it published and the record had been public for 6 years, 6 months when this index was last written.

No material movement in 81 days as of the last ingest this index recorded.

Published 2020-02-27 receipt · Public PoC 2020-03-03 receipt · CISA KEV 2021-11-03 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-843, access of resource using incompatible type ('type confusion'). The index holds 923 prior instances of this class, 41 KEV-listed. [email protected]

CVE-2023-2033 · Google Chromematches 9 of 9KEV listed · 2023receipt
CVE-2023-3079 · Google Chromematches 9 of 9KEV listed · 2023receipt
CVE-2023-4762 · Google Chromematches 9 of 9KEV listed · 2023receipt
CVE-2022-1096 · Google Chromematches 9 of 9KEV listed · 2022receipt
CVE-2022-1364 · Google Chromematches 9 of 9KEV listed · 2022receipt
CVE-2022-3723 · Google Chromematches 9 of 9KEV listed · 2022receipt

923 records in this class held. The six above are ranked by exploit maturity, then recency.

Siblings and hubs

Records related to this one

Browse the index from here

These are index-wide views, not findings about CVE-2020-6418.

What usually comes next

Everything above needs no account. What is below is work: assembling it, scoping it to your estate, watching it, and handing it to someone else.

Everything on this page is free. Public data. Withholding it protects nothing.