ADFS MFA Elevation of Privilege Vulnerability
Published Sep 11, 2020
5.3
MEDIUMCVSS 3.1
EPSS 1.44%
Description
<p>An elevation of privilege vulnerability exists when Active Directory Federation Services (ADFS) improperly handles multi-factor authentication requests. An attacker who successfully exploited this vulnerability could bypass some, but not all, of the authentication factors.</p> <p>To exploit this vulnerability, an attacker could send a specially crafted authentication request.</p> <p>This security update corrects how ADFS handles multi-factor authentication requests.</p>
Affected products
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- Version 10.0.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Windows 10 Version 1607 | n/a |
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| Microsoft | Windows 10 Version 1809 | n/a |
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| Microsoft | Windows 10 Version 1903 for 32-bit Systems | n/a |
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| Microsoft | Windows 10 Version 1903 for ARM64-based Systems | n/a |
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| Microsoft | Windows 10 Version 1903 for x64-based Systems | n/a |
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| Microsoft | Windows 10 Version 1909 | n/a |
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| Microsoft | Windows 10 Version 2004 | n/a |
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| Microsoft | Windows Server 2016 | n/a |
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| Microsoft | Windows Server 2016 (Server Core installation) | n/a |
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| Microsoft | Windows Server 2019 | n/a |
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| Microsoft | Windows Server 2019 (Server Core installation) | n/a |
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| Microsoft | Windows Server version 2004 | n/a |
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| Microsoft | Windows Server, version 1903 (Server Core installation) | n/a |
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| Microsoft | Windows Server, version 1909 (Server Core installation) | n/a |
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- 1607
- 1607
- 1809
- 1903
- 1909
- 2004
- n/a
- 1903
- 1909
- 2004
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
2 other sources (CVE.org, NVD) ▾
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.44% (0.01436) | 72.22th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.44% (0.01436) | 69.57th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.79% (0.00790) | 72.21th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00082) | 36.74th | v3 (v2023.03.01) |
| Jan 1, 2024 | 0.08% (0.00082) | 34.13th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00050) | 17.20th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.15% (0.01150) | 60.47th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.15% (0.01150) | 59.39th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.15% (0.01150) | 57.39th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.29% (0.02288) | 58.26th | v2 (v2022.01.01) |
| Feb 3, 2022 | 17.64% (0.17642) | 92.83th | v1 |
| Jan 6, 2022 | 17.64% (0.17642) | 92.74th | v1 |
| Sep 1, 2021 | 4.56% (0.04557) | 86.26th | v1 |
| Apr 14, 2021 | 4.56% (0.04557) | 0.00th | v1 |
No CWE recorded.
References (1)
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0837 x_refsource_MISCPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0837 | x_refsource_MISCPatchVendor Advisory |
Change history (0)
No recorded changes yet.