Microsoft SharePoint Spoofing Vulnerability
Published May 21, 2020
5.4
MEDIUMCVSS 3.1
EPSS 1.67%
Description
A spoofing vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected SharePoint server. The attacker who successfully exploited the vulnerability could then perform cross-site scripting attacks on affected systems and run script in the security context of the current user. These attacks could allow the attacker to read content that the attacker is not authorized to read, use the victim's identity to take actions on the SharePoint site on behalf of the user, such as change permissions and delete content, and inject malicious content in the browser of the user. The security update addresses the vulnerability by helping to ensure that SharePoint Server properly sanitizes web requests.
Affected products
-
- Version 16.0.0StatusaffectedConstraints<publication
- Version
-
- Version 15.0.0StatusaffectedConstraints<publication
- Version
-
- Version 16.0.0StatusaffectedConstraints<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 | Microsoft SharePoint Enterprise Server 2016 | n/a |
| ||||||
| Microsoft | Microsoft SharePoint Foundation 2013 Service Pack 1 | n/a |
| ||||||
| Microsoft | Microsoft SharePoint Server 2019 | n/a |
|
- 2016
- 2013
- 2019
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:L/PR:L/UI:R/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/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 | 1.67% (0.01666) | 75.92th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.58% (0.01582) | 72.26th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.55% (0.00554) | 66.13th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00053) | 23.12th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.05% (0.00053) | 21.16th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00053) | 19.12th | 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 | 1.55% (0.01554) | 51.90th | v2 (v2022.01.01) |
| Feb 3, 2022 | 18.54% (0.18544) | 93.61th | v1 |
| Jan 6, 2022 | 18.54% (0.18544) | 93.54th | v1 |
| Sep 1, 2021 | 4.83% (0.04829) | 87.41th | v1 |
| Apr 14, 2021 | 4.83% (0.04829) | 0.00th | v1 |
References (2)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1104 vendor-advisorypatch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1104 PatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1104 | vendor-advisorypatch | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1104 | PatchVendor Advisory |
Change history (0)
No recorded changes yet.