CVE-2020-0638 kev+ ransomware in the critical feed json
An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files.To exploit this vulnerability, an a…
published 2020-01-14 6 y ago modified 2026-08-12 2 mo ago also EUVD-2020-2132
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2022-05-23, used in ransomware
- epss
- 2.5%
- EPSS 2.5% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Update Notification Manager Elevation of Privilege Vulnerability'.
Patch / fix
cisa required action Apply updates per vendor instructions.
Timeline
- Published
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 4 y ago
- Patch by
- 2022-06-13 (4 y ago)
- Ransomware
- Known to be used in ransomware campaigns
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Microsoft, Update Notification Manager
- CISA name
- Microsoft Update Notification Manager Privilege Escalation Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 y ago
Exploit prediction
2.54% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Microsoft Windows
- Microsoft Windows 10 Version 1903 for ARM64-based Systems
- Microsoft Windows 10 Version 1903 for 32-bit Systems
- Microsoft Windows 10 Version 1903 for x64-based Systems
- Microsoft Windows Server
- Microsoft Windows Server, version 1903 (Server Core installation)
- Microsoft Windows 10 Version 1909 for 32-bit Systems
- Microsoft Windows 10 Version 1909 for x64-based Systems
- Microsoft Windows Server, version 1909 (Server Core installation)
- Microsoft Windows 10 Version 1909 for ARM64-based Systems
Classification
- Weakness
-
- CWE-59 Improper Link Resolution Before File Access
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2020-0638
patch, vendor-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0638
government-resource, us-government-resource
Sources
- CVE List CVE-2020-0638
- NVD CVE-2020-0638
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