Vulnerability Details : CVE-2020-0638
Used for ransomware!
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'.
Vulnerability category: Gain privilege
Products affected by CVE-2020-0638
- cpe:2.3:o:microsoft:windows_server_1803:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*
- cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:*
- cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:arm64:*
- cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x86:*
- cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:arm64:*
- cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:arm64:*
- cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:*
- cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:*
- cpe:2.3:o:microsoft:windows_server_1903:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:*:*
CVE-2020-0638 is in the CISA Known Exploited Vulnerabilities Catalog
This issue is known to have been leveraged as part of a ransomware campaign.
CISA vulnerability name:
Microsoft Update Notification Manager Privilege Escalation Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
Microsoft Update Notification Manager contains an unspecified vulnerability that allows for privilege escalation.
Notes:
https://nvd.nist.gov/vuln/detail/CVE-2020-0638
Added on
2022-05-23
Action due date
2022-06-13
Exploit prediction scoring system (EPSS) score for CVE-2020-0638
7.01%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-0638
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2025-02-07 |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2020-0638
-
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
References for CVE-2020-0638
-
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0638
CVE-2020-0638 - Security Update Guide - Microsoft - Update Notification Manager Elevation of Privilege VulnerabilityPatch;Vendor Advisory
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