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Vulnerability Details :

CVE-2020-12812

Summary
Assigner-fortinet
Assigner Org ID-6abe59d8-c742-4dff-8ce8-9b0ca1073da8
Published At-24 Jul, 2020 | 22:28
Updated At-30 Jul, 2025 | 01:45
Rejected At-
Credits

Fortinet FortiOS SSL VPN Improper Authentication Vulnerability

Fortinet FortiOS SSL VPN contains an improper authentication vulnerability that may allow a user to login successfully without being prompted for the second factor of authentication (FortiToken) if they change the case in their username.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Known Exploited Vulnerabilities (KEV)
cisa.gov
Vendor:
Fortinet, Inc.Fortinet
Product:FortiOS
Added At:03 Nov, 2021
Due At:03 May, 2022

Fortinet FortiOS SSL VPN Improper Authentication Vulnerability

Fortinet FortiOS SSL VPN contains an improper authentication vulnerability that may allow a user to login successfully without being prompted for the second factor of authentication (FortiToken) if they change the case in their username.

Used in Ransomware

:

Known

CWE

:
CWE-178CWE-287

Required Action:

Apply updates per vendor instructions.

Additional Notes:

https://nvd.nist.gov/vuln/detail/CVE-2020-12812
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:fortinet
Assigner Org ID:6abe59d8-c742-4dff-8ce8-9b0ca1073da8
Published At:24 Jul, 2020 | 22:28
Updated At:30 Jul, 2025 | 01:45
Rejected At:
▼CVE Numbering Authority (CNA)

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.

Affected Products
Vendor
n/a
Product
Fortinet FortiOS
Versions
Affected
  • FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below
Problem Types
TypeCWE IDDescription
textN/AImproper Access Control
Type: text
CWE ID: N/A
Description: Improper Access Control
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://fortiguard.com/psirt/FG-IR-19-283
x_refsource_MISC
Hyperlink: https://fortiguard.com/psirt/FG-IR-19-283
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://fortiguard.com/psirt/FG-IR-19-283
x_refsource_MISC
x_transferred
Hyperlink: https://fortiguard.com/psirt/FG-IR-19-283
Resource:
x_refsource_MISC
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-287CWE-287 Improper Authentication
Type: CWE
CWE ID: CWE-287
Description: CWE-287 Improper Authentication
Metrics
VersionBase scoreBase severityVector
3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
kev
dateAdded:
2021-11-03
reference:
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12812
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
CVE-2020-12812 added to CISA KEV2021-11-03 00:00:00
Event: CVE-2020-12812 added to CISA KEV
Date: 2021-11-03 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:psirt@fortinet.com
Published At:24 Jul, 2020 | 23:15
Updated At:24 Feb, 2025 | 15:43

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
2021-11-032022-05-03Fortinet FortiOS SSL VPN Improper Authentication VulnerabilityApply updates per vendor instructions.
Date Added: 2021-11-03
Due Date: 2022-05-03
Vulnerability Name: Fortinet FortiOS SSL VPN Improper Authentication Vulnerability
Required Action: Apply updates per vendor instructions.
Metrics
TypeVersionBase scoreBase severityVector
Primary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Secondary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary2.07.5HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
Type: Primary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Primary
Version: 2.0
Base score: 7.5
Base severity: HIGH
Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P
CPE Matches
Fortinet, Inc.
fortinet
>>fortios>>Versions before 6.0.10(exclusive)
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
Fortinet, Inc.
fortinet
>>fortios>>Versions from 6.2.0(inclusive) to 6.2.4(exclusive)
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
Fortinet, Inc.
fortinet
>>fortios>>6.4.0
cpe:2.3:o:fortinet:fortios:6.4.0:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-178Primarynvd@nist.gov
CWE-287Primarynvd@nist.gov
CWE-287Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-178
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-287
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-287
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://fortiguard.com/psirt/FG-IR-19-283psirt@fortinet.com
Vendor Advisory
https://fortiguard.com/psirt/FG-IR-19-283af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Hyperlink: https://fortiguard.com/psirt/FG-IR-19-283
Source: psirt@fortinet.com
Resource:
Vendor Advisory
Hyperlink: https://fortiguard.com/psirt/FG-IR-19-283
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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