CVE-2020-6418

CRITICALNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 79%CVSS: 8.8Exploit: cisa kev · ssvc active · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

A fix is available — apply it.

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 v3
8.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
79%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

February 27, 2020

Last Modified

October 24, 2025

Advisory Details (8)

Auto-updated Jun 2, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 6 Supplementary.

https://access.redhat.com/errata/RHSA-2020:0738
generic

Packet Storm

http://packetstormsecurity.com/files/156632/Google-Chrome-80-JSCreate-Side-Effect-Type-Confusion.html
generic

[SECURITY] [DSA 4638-1] chromium security update

https://www.debian.org/security/2020/dsa-4638
generic

Chromium, Google Chrome: Multiple vulnerabilities (GLSA 202003-08) — Gentoo security

https://security.gentoo.org/glsa/202003-08
generic

[SECURITY] Fedora 31 Update: chromium-80.0.3987.132-1.fc31 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/
generic

[SECURITY] Fedora 30 Update: chromium-80.0.3987.149-1.fc30 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/
generic
https://crbug.com/1053604
generic🔴 Active Exploitation

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatchromium-browser-0:80.0.3987.122-1.el6_102020-03-09redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:10(1)
PackageVulnerable rangeFixed inDependents
chromium73.0.3683.75-1 ... 80.0.3987.122-2 (25 versions)80.0.3987.132-1~deb10u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
chromium—80.0.3987.122-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
chromium—80.0.3987.122-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
chromium—80.0.3987.122-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
chromium—80.0.3987.122-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 94× in last 7d / 401× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 1,435 total refreshes for this CVE.

  1. 2026-09-19 14:23 UTCVendor advisory
  2. 2026-09-19 14:23 UTCGHSA enrichment
  3. 2026-09-19 10:17 UTCVendor advisory
  4. 2026-09-19 10:17 UTCGHSA enrichment
  5. 2026-09-19 06:12 UTCVendor advisory
  6. 2026-09-19 06:12 UTCGHSA enrichment
  7. 2026-09-19 02:04 UTCVendor advisory
  8. 2026-09-19 02:04 UTCGHSA enrichment
  9. 2026-09-18 21:59 UTCVendor advisory
  10. 2026-09-18 21:59 UTCGHSA enrichment
  11. 2026-09-18 19:20 UTCCISA KEV update
  12. 2026-09-18 17:54 UTCVendor advisory
  13. 2026-09-18 17:54 UTCGHSA enrichment
  14. 2026-09-18 14:15 UTCCISA KEV update
  15. 2026-09-18 13:49 UTCVendor advisory
  16. 2026-09-18 13:49 UTCGHSA enrichment
  17. 2026-09-18 09:44 UTCVendor advisory
  18. 2026-09-18 09:44 UTCGHSA enrichment
  19. 2026-09-18 05:39 UTCVendor advisory
  20. 2026-09-18 05:39 UTCGHSA enrichment
  21. 2026-09-18 01:34 UTCVendor advisory
  22. 2026-09-18 01:34 UTCGHSA enrichment
  23. 2026-09-17 21:28 UTCEG score recompute
  24. 2026-09-17 21:28 UTCVendor advisory
  25. 2026-09-17 21:28 UTCGHSA enrichment
Show 75 more
  1. 2026-09-17 19:22 UTCEPSS rescore
  2. 2026-09-17 17:22 UTCVendor advisory
  3. 2026-09-17 17:22 UTCGHSA enrichment
  4. 2026-09-17 12:31 UTCVendor advisory
  5. 2026-09-17 12:30 UTCGHSA enrichment
  6. 2026-09-17 08:23 UTCVendor advisory
  7. 2026-09-17 08:23 UTCGHSA enrichment
  8. 2026-09-17 04:16 UTCVendor advisory
  9. 2026-09-17 04:16 UTCGHSA enrichment
  10. 2026-09-17 00:11 UTCVendor advisory
  11. 2026-09-17 00:11 UTCGHSA enrichment
  12. 2026-09-16 20:05 UTCVendor advisory
  13. 2026-09-16 20:05 UTCGHSA enrichment
  14. 2026-09-16 16:00 UTCEG score recompute
  15. 2026-09-16 16:00 UTCVendor advisory
  16. 2026-09-16 16:00 UTCGHSA enrichment
  17. 2026-09-16 14:10 UTCCISA KEV update
  18. 2026-09-16 14:04 UTCEPSS rescore
  19. 2026-09-16 11:55 UTCVendor advisory
  20. 2026-09-16 11:55 UTCGHSA enrichment
  21. 2026-09-16 07:50 UTCVendor advisory
  22. 2026-09-16 07:49 UTCGHSA enrichment
  23. 2026-09-16 03:41 UTCVendor advisory
  24. 2026-09-16 03:41 UTCGHSA enrichment
  25. 2026-09-15 23:36 UTCVendor advisory
  26. 2026-09-15 23:36 UTCGHSA enrichment
  27. 2026-09-15 19:31 UTCVendor advisory
  28. 2026-09-15 19:31 UTCGHSA enrichment
  29. 2026-09-15 15:26 UTCVendor advisory
  30. 2026-09-15 15:26 UTCGHSA enrichment
  31. 2026-09-15 11:21 UTCVendor advisory
  32. 2026-09-15 11:21 UTCGHSA enrichment
  33. 2026-09-15 07:16 UTCVendor advisory
  34. 2026-09-15 07:16 UTCGHSA enrichment
  35. 2026-09-15 03:10 UTCEG score recompute
  36. 2026-09-15 03:10 UTCVendor advisory
  37. 2026-09-15 03:10 UTCGHSA enrichment
  38. 2026-09-15 03:06 UTCEPSS rescore
  39. 2026-09-14 23:05 UTCVendor advisory
  40. 2026-09-14 23:05 UTCGHSA enrichment
  41. 2026-09-14 19:24 UTCCISA KEV update
  42. 2026-09-14 19:00 UTCVendor advisory
  43. 2026-09-14 19:00 UTCGHSA enrichment
  44. 2026-09-14 14:55 UTCVendor advisory
  45. 2026-09-14 14:55 UTCGHSA enrichment
  46. 2026-09-14 10:49 UTCVendor advisory
  47. 2026-09-14 10:49 UTCGHSA enrichment
  48. 2026-09-14 06:44 UTCVendor advisory
  49. 2026-09-14 06:44 UTCGHSA enrichment
  50. 2026-09-14 02:39 UTCVendor advisory
  51. 2026-09-14 02:39 UTCGHSA enrichment
  52. 2026-09-13 22:34 UTCVendor advisory
  53. 2026-09-13 22:34 UTCGHSA enrichment
  54. 2026-09-13 18:29 UTCEG score recompute
  55. 2026-09-13 18:29 UTCVendor advisory
  56. 2026-09-13 18:29 UTCGHSA enrichment
  57. 2026-09-13 16:43 UTCEPSS rescore
  58. 2026-09-13 14:24 UTCVendor advisory
  59. 2026-09-13 14:24 UTCGHSA enrichment
  60. 2026-09-13 10:19 UTCVendor advisory
  61. 2026-09-13 10:19 UTCGHSA enrichment
  62. 2026-09-13 06:13 UTCVendor advisory
  63. 2026-09-13 06:13 UTCGHSA enrichment
  64. 2026-09-13 02:07 UTCVendor advisory
  65. 2026-09-13 02:07 UTCGHSA enrichment
  66. 2026-09-12 22:02 UTCVendor advisory
  67. 2026-09-12 22:02 UTCGHSA enrichment
  68. 2026-09-12 17:56 UTCVendor advisory
  69. 2026-09-12 17:56 UTCGHSA enrichment
  70. 2026-09-12 13:51 UTCVendor advisory
  71. 2026-09-12 13:51 UTCGHSA enrichment
  72. 2026-09-12 09:46 UTCVendor advisory
  73. 2026-09-12 09:46 UTCGHSA enrichment
  74. 2026-09-12 05:41 UTCVendor advisory
  75. 2026-09-12 05:41 UTCGHSA enrichment

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 Metasploit module) (2 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCulexec/ChromeSHELFLoader
    First seen Feb 19, 2022

    An exploit for CVE-2020-6418 implementing a SHELF Loader. Published as part of Tmp.0ut volume 2

    Open source ↗
  • GitHub PoCGoyotan/CVE-2020-6418-PoC
    First seen Jun 13, 2020

    for 供養

    Open source ↗
  • Exploit-DBEDB-48186✓ verified
    First seen Mar 9, 2020

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

    Open source ↗
  • Metasploitexploit/multi/browser/chrome_jscreate_sideeffect✓ verified
    First seen Feb 19, 2020

    Google Chrome 80 JSCreate side-effect type confusion exploit

    Open source ↗

Frequently asked(6)

What is CVE-2020-6418?
CVE-2020-6418 is a critical vulnerability published on February 27, 2020. 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.
When was CVE-2020-6418 disclosed?
CVE-2020-6418 was first published in the National Vulnerability Database on February 27, 2020, with the most recent update on October 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-6418 actively exploited?
Yes. CISA added CVE-2020-6418 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Google Chromium V8. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2020-6418?
CVE-2020-6418 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2020-6418?
CVE-2020-6418 affects Google Chromium V8. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2020-6418?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-6418, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-6418

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