CVE-2020-12812

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 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 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • 57 internet-exposed hosts are running an affected version right now
  • Actively exploited in the wild (CISA-KEV)
  • Linked to ransomware campaigns
CISA-KEV: ExploitedEPSS: 49%CVSS: 9.8Exploit: NoneExposed: 57

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.

Live · internet exposure

57 internet-exposed hosts are running an affected version of CVE-2020-12812 right now.

across 17 countries (United States, Thailand, United Kingdom, Japan, France)top: fortios🔒 ransomware-linked
See the live KEV-Exposure radar →Found passively from public internet-scan data — aggregate, host-redacted.

EchelonGraph is the only CVE feed that fuses live vulnerability intelligence with its own live internet-exposure radar — so you see not just that a CVE is exploited, but how much of the internet is exposed to it right now.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
98.8%
KEV
⚠ Exploited

Published

July 24, 2020

Last Modified

October 24, 2025

Advisory Details (2)

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-2020-12812
generic

PSIRT | FortiGuard Labs

https://fortiguard.com/psirt/FG-IR-19-283

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 57× in last 7d / 225× 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 390 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2020-12812?
CVE-2020-12812 is a critical vulnerability published on July 24, 2020. An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.
When was CVE-2020-12812 disclosed?
CVE-2020-12812 was first published in the National Vulnerability Database on July 24, 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-2020-12812 actively exploited?
Yes. CISA added CVE-2020-12812 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Fortinet FortiOS. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2020-12812?
CVE-2020-12812 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2020-12812?
CVE-2020-12812 affects Fortinet FortiOS. 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-2020-12812?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-12812, 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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