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
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • 308 internet-exposed hosts are running an affected version right now
  • Actively exploited in the wild (CISA-KEV)
  • Linked to ransomware campaigns
CISA-KEV: ExploitedEPSS PROB: 49%CVSS: 9.8Exploit: cisa kev · ssvc active · kev ransomware · epss top5pctExposed: 308

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

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

across 24 countries (United States, Canada, India, Brazil, Japan)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)
EG Risk
99(Attend)
EG Risk 99/100SSVC: 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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
49%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

July 24, 2020

Last Modified

August 12, 2026

Advisory Details (2)

Auto-updated Sep 9, 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

Just a moment

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 / 241× 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 840 total refreshes for this CVE.

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

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 August 12, 2026. 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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