HIGH KEV Used in ransomware campaigns ⚠
An elevation of privilege vulnerability exists when the Windows Background Intelligent Transfer Service (BITS) improperly handles symbolic links, aka 'Windows Background Intelligent Transfer Service Elevation of Privilege Vulnerability'
Published Mar 12, 2020 ·Due Jul 28, 2022
7.8
HIGHCVSS 3.1
EPSS 42.52%
Description
An elevation of privilege vulnerability exists when the Windows Background Intelligent Transfer Service (BITS) improperly handles symbolic links, aka 'Windows Background Intelligent Transfer Service Elevation of Privilege Vulnerability'.
Affected products
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- Version 10 Version 1607 for 32-bit SystemsStatusaffectedConstraints-
- Version 10 Version 1607 for x64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1709 for 32-bit SystemsStatusaffectedConstraints-
- Version 10 Version 1709 for ARM64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1709 for x64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1803 for 32-bit SystemsStatusaffectedConstraints-
- Version 10 Version 1803 for ARM64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1803 for x64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1809 for 32-bit SystemsStatusaffectedConstraints-
- Version 10 Version 1809 for ARM64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1809 for x64-based SystemsStatusaffectedConstraints-
- Version 10 for 32-bit SystemsStatusaffectedConstraints-
- Version 10 for x64-based SystemsStatusaffectedConstraints-
- Version 7 for 32-bit Systems Service Pack 1StatusaffectedConstraints-
- Version 7 for x64-based Systems Service Pack 1StatusaffectedConstraints-
- Version 8.1 for 32-bit systemsStatusaffectedConstraints-
- Version 8.1 for x64-based systemsStatusaffectedConstraints-
- Version RT 8.1StatusaffectedConstraints-
- Version
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- Version unspecifiedStatusaffectedConstraints-
- Version
-
- Version unspecifiedStatusaffectedConstraints-
- Version
-
- Version unspecifiedStatusaffectedConstraints-
- Version
-
- Version unspecifiedStatusaffectedConstraints-
- Version
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- Version unspecifiedStatusaffectedConstraints-
- Version
-
- Version unspecifiedStatusaffectedConstraints-
- Version
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- Version 2008 R2 for Itanium-Based Systems Service Pack 1StatusaffectedConstraints-
- Version 2008 R2 for x64-based Systems Service Pack 1StatusaffectedConstraints-
- Version 2008 R2 for x64-based Systems Service Pack 1 (Core installation)StatusaffectedConstraints-
- Version 2008 for 32-bit Systems Service Pack 2StatusaffectedConstraints-
- Version 2008 for 32-bit Systems Service Pack 2 (Core installation)StatusaffectedConstraints-
- Version 2008 for Itanium-Based Systems Service Pack 2StatusaffectedConstraints-
- Version 2008 for x64-based Systems Service Pack 2StatusaffectedConstraints-
- Version 2008 for x64-based Systems Service Pack 2 (Core installation)StatusaffectedConstraints-
- Version 2012StatusaffectedConstraints-
- Version 2012 (Core installation)StatusaffectedConstraints-
- Version 2012 R2StatusaffectedConstraints-
- Version 2012 R2 (Core installation)StatusaffectedConstraints-
- Version 2016StatusaffectedConstraints-
- Version 2016 (Core installation)StatusaffectedConstraints-
- Version 2019StatusaffectedConstraints-
- Version 2019 (Core installation)StatusaffectedConstraints-
- Version version 1803 (Core Installation)StatusaffectedConstraints-
- Version
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- Version unspecifiedStatusaffectedConstraints-
- Version
-
- Version unspecifiedStatusaffectedConstraints-
- 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 | 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 for 32-bit Systems | n/a |
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| Microsoft | Windows 10 Version 1909 for ARM64-based Systems | n/a |
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| Microsoft | Windows 10 Version 1909 for x64-based Systems | n/a |
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| Microsoft | Windows Server | 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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OR
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- r2
- n/a
- r2
- n/a
- 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.
7.8 HIGH NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
7.2 HIGH NVD
AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
Listed in CISA KEV KEV Used in ransomware campaigns ⚠
Date Added
Jan 28, 2022
Patch Due
Jul 28, 2022
Required Action
Apply updates per vendor instructions.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Feb 7, 2025 · SSVC 2.0.3
42.52% 0.42524
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.42524
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 (63 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 42.52% (0.42524) | 98.67th | v5 (v2026.06.15) |
| Jun 15, 2026 | 42.52% (0.42524) | 98.53th | v5 (v2026.06.15) |
| May 10, 2026 | 59.28% (0.59276) | 98.26th | v4 (v2025.03.14) |
| Mar 10, 2026 | 60.81% (0.60807) | 98.27th | v4 (v2025.03.14) |
| Feb 2, 2026 | 59.28% (0.59276) | 98.19th | v4 (v2025.03.14) |
| Feb 1, 2026 | 63.34% (0.63338) | 98.36th | v4 (v2025.03.14) |
| Jan 13, 2026 | 70.22% (0.70215) | 98.62th | v4 (v2025.03.14) |
| Dec 31, 2025 | 72.44% (0.72440) | 98.70th | v4 (v2025.03.14) |
| Dec 30, 2025 | 70.83% (0.70830) | 98.64th | v4 (v2025.03.14) |
| Dec 28, 2025 | 69.78% (0.69776) | 98.60th | v4 (v2025.03.14) |
| Dec 27, 2025 | 71.11% (0.71109) | 98.66th | v4 (v2025.03.14) |
| Dec 22, 2025 | 69.78% (0.69776) | 98.60th | v4 (v2025.03.14) |
| Dec 18, 2025 | 66.82% (0.66818) | 98.47th | v4 (v2025.03.14) |
| Dec 11, 2025 | 63.78% (0.63784) | 98.33th | v4 (v2025.03.14) |
| Nov 21, 2025 | 58.65% (0.58648) | 98.10th | v4 (v2025.03.14) |
| Nov 18, 2025 | 31.45% (0.31449) | 96.54th | v4 (v2025.03.14) |
| Nov 4, 2025 | 58.65% (0.58648) | 98.10th | v4 (v2025.03.14) |
| Oct 29, 2025 | 65.20% (0.65200) | 98.39th | v4 (v2025.03.14) |
| Oct 28, 2025 | 66.59% (0.66593) | 98.45th | v4 (v2025.03.14) |
| Oct 27, 2025 | 68.05% (0.68050) | 98.52th | v4 (v2025.03.14) |
| Oct 22, 2025 | 66.59% (0.66593) | 98.45th | v4 (v2025.03.14) |
| Oct 8, 2025 | 61.98% (0.61982) | 98.24th | v4 (v2025.03.14) |
| Oct 1, 2025 | 59.46% (0.59460) | 98.20th | v4 (v2025.03.14) |
| Aug 3, 2025 | 57.14% (0.57142) | 98.05th | v4 (v2025.03.14) |
| Jul 27, 2025 | 54.78% (0.54777) | 97.91th | v4 (v2025.03.14) |
| Jul 18, 2025 | 59.67% (0.59671) | 98.13th | v4 (v2025.03.14) |
| Jul 17, 2025 | 61.89% (0.61889) | 98.23th | v4 (v2025.03.14) |
| Jul 16, 2025 | 56.59% (0.56591) | 97.98th | v4 (v2025.03.14) |
| Jul 12, 2025 | 54.21% (0.54211) | 97.88th | v4 (v2025.03.14) |
| Jun 19, 2025 | 57.85% (0.57853) | 98.03th | v4 (v2025.03.14) |
| Jun 15, 2025 | 59.29% (0.59289) | 98.09th | v4 (v2025.03.14) |
| Mar 23, 2025 | 58.00% (0.58000) | 97.94th | v4 (v2025.03.14) |
| Mar 17, 2025 | 60.56% (0.60555) | 98.09th | v4 (v2025.03.14) |
| Feb 19, 2025 | 81.99% (0.81986) | 98.66th | v3 (v2023.03.01) |
| Jan 16, 2025 | 80.20% (0.80199) | 98.56th | v3 (v2023.03.01) |
| Dec 31, 2024 | 78.31% (0.78308) | 98.47th | v3 (v2023.03.01) |
| Dec 17, 2024 | 82.64% (0.82641) | 98.65th | v3 (v2023.03.01) |
| Dec 12, 2024 | 90.63% (0.90626) | 98.97th | v3 (v2023.03.01) |
| Jul 25, 2024 | 90.71% (0.90709) | 98.88th | v3 (v2023.03.01) |
| Mar 5, 2024 | 1.09% (0.01090) | 83.97th | v3 (v2023.03.01) |
| Jan 15, 2024 | 1.44% (0.01443) | 85.22th | v3 (v2023.03.01) |
| Oct 8, 2023 | 0.72% (0.00722) | 78.38th | v3 (v2023.03.01) |
| Sep 20, 2023 | 0.55% (0.00549) | 74.70th | v3 (v2023.03.01) |
| Aug 16, 2023 | 0.18% (0.00177) | 54.13th | v3 (v2023.03.01) |
| Jul 31, 2023 | 0.15% (0.00151) | 50.54th | v3 (v2023.03.01) |
| Jul 16, 2023 | 0.54% (0.00538) | 74.16th | v3 (v2023.03.01) |
| Jun 29, 2023 | 0.15% (0.00146) | 49.55th | v3 (v2023.03.01) |
| May 30, 2023 | 0.17% (0.00174) | 53.19th | v3 (v2023.03.01) |
| May 14, 2023 | 0.45% (0.00453) | 71.49th | v3 (v2023.03.01) |
| Apr 29, 2023 | 0.26% (0.00264) | 62.58th | v3 (v2023.03.01) |
| Apr 15, 2023 | 0.62% (0.00616) | 75.62th | v3 (v2023.03.01) |
| Mar 30, 2023 | 0.17% (0.00172) | 52.73th | v3 (v2023.03.01) |
| Mar 16, 2023 | 0.67% (0.00674) | 76.73th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00208) | 56.99th | v3 (v2023.03.01) |
| Mar 6, 2023 | 10.72% (0.10723) | 94.66th | v2 (v2022.01.01) |
| Feb 19, 2023 | 10.72% (0.10723) | 94.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 9.10% (0.09099) | 93.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.10% (0.09099) | 86.89th | v2 (v2022.01.01) |
| Feb 3, 2022 | 70.43% (0.70425) | 99.49th | v1 |
| Sep 16, 2021 | 70.43% (0.70425) | 99.84th | v1 |
| Sep 14, 2021 | 24.37% (0.24372) | 98.21th | v1 |
| Sep 1, 2021 | 70.43% (0.70425) | 99.84th | v1 |
| Apr 14, 2021 | 70.43% (0.70425) | 0.00th | v1 |
Weaknesses (1)
References (3)
- http://packetstormsecurity.com/files/158056/Background-Intelligent-Transfer-Service-Privilege-Escalation.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0787 x_refsource_MISCPatchVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0787 government-resourceUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/158056/Background-Intelligent-Transfer-Service-Privilege-Escalation.html | x_refsource_MISCExploitThird Party AdvisoryVDB Entry | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0787 | x_refsource_MISCPatchVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0787 | government-resourceUS Government Resource |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Mar 12, 2020
Updated Aug 12, 2026
Reserved Nov 4, 2019
Link CVE-2020-0787
CISA Vulnrichment
Updated Feb 7, 2025