CVE-2020-16017

CRITICALNVD 9.69.6—
EchelonGraph scoreHIGH confidence

Score elevated to 9.6 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 9.6 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, nvd
Trending — 4 sources updated this weekExploited in the wild
9.6
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 3%CVSS: 9.6Exploit: NoneExposed: 0

A fix is available — apply it.

Use after free in site isolation in Google Chrome prior to 86.0.4240.198 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

CVSS v3
9.6
EG Score
9.6(high)
EPSS
84.5%
KEV
⚠ Exploited

Published

January 8, 2021

Last Modified

October 24, 2025

Advisory Details (3)

Auto-updated Jun 1, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-16017
generic
https://crbug.com/1146709
generic🔴 Active Exploitation

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop_11.html

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatchromium-browser-0:86.0.4240.198-1.el6_102020-11-23redhat

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

(4 across 1 ecosystem)
NuGet(4)
PackageVulnerable rangeFixed inDependents
CefSharp.Common31.0.0-pre1 ... 86.0.240-pre (87 versions)86.0.241—
CefSharp.WinForms1.25.3 ... 86.0.240-pre (86 versions)86.0.241—
CefSharp.Wpf1.25.2-perlun0 ... 86.0.240-pre (94 versions)86.0.241—
CefSharp.Wpf.HwndHost83.4.20-pre, 84.4.10, 85.3.121, 85.3.13086.0.241—

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 89× in last 7d / 377× 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 544 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2020-16017?
CVE-2020-16017 is a critical vulnerability published on January 8, 2021. Use after free in site isolation in Google Chrome prior to 86.0.4240.198 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.
When was CVE-2020-16017 disclosed?
CVE-2020-16017 was first published in the National Vulnerability Database on January 8, 2021, 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-2020-16017 actively exploited?
Yes. CISA added CVE-2020-16017 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Google Chrome. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2020-16017?
CVE-2020-16017 has a CVSS v3 base score of 9.6 (NVD).
Which products are affected by CVE-2020-16017?
CVE-2020-16017 affects Google Chrome. 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-2020-16017?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-16017, 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

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