8.8

CVE-2020-6418: Google Chromium V8 Type Confusion Vulnerability

KEV
Analyzed
AliasesUBUNTU-CVE-2020-6418DEBIAN-CVE-2020-6418
Published 27-02-2020Last modified 21-10-2025

Vulnerability summary

CVE-2020-6418 is a high (CVSS 8.8) vulnerability in Google Chromium V8. It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 78.81% chance of exploitation in the next 30 days, higher than 99.5% of scored vulnerabilities. 4 public exploits are recorded.

Priority
Act nowlisted as exploited

Listed as exploited by CISA (03-11-2021)

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
78.81%
0%100%
Critical · 0.00 pp in 30 days
KEVExploited in the wildCritical · listed in 1 catalog
RansomwareNot flaggedNo ransomware use recorded.
Public exploits4reference, exploit-database, metasploit

Advisory lineage

Upstream 0 · Downstream 7 · Related 4
DSA-4638-1MGASA-2020-0123OPENSUSE-SU-2020:0245-1OPENSUSE-SU-2020:0259-1OPENSUSE-SU-2024:10681-1OPENSUSE-SU-2024:12948-1

Timeline

  1. 27-02-2020
    PublishedVulnerability first disclosed.
  2. 03-11-2021
    Added to CISA KEVExploitedGoogle Chromium V8 Type Confusion Vulnerability
  3. 03-05-2022
    CISA remediation dueDeadline passedApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

78.81%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

No change 0.00 pp

From 78.81% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
03-11-2021
Federal due date
03-05-2022
ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2020-6418

Public exploits

4 found
  • referenceUnverified

    Exploit Reference (crbug.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

  • exploit-databaseremotemultipleVerified

    Google Chrome 80 - JSCreate Side-effect Type Confusion (Metasploit)

    Maturity: weaponized

Show all 4 exploits
  • MetasploitMetasploitremoteUnverified

    Google Chrome 80 JSCreate side-effect type confusion exploit

    exploit/multi/browser/chrome_jscreate_sideeffect

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat3 products
Debian2 products
Fedoraproject1 product
Google1 product
  • chrome≥ unspecified, < 80.0.3987.122 | < 80.0.3987.122
Ubuntu1 product
  • chromium-browser< 80.0.3987.149-0ubuntu0.16.04.1 | < 80.0.3987.149-0ubuntu0.18.04.1

5 vendors · 8 products

References

13 links
Show all 13 references