Vulnerability Details : CVE-2021-38646
Used for ransomware!
Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability
Vulnerability category: Execute code
Products affected by CVE-2021-38646
- cpe:2.3:a:microsoft:office:2013:sp1:*:*:rt:*:*:*
- cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:office:2013:sp1:*:*:-:*:*:*
- cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*
CVE-2021-38646 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 Office Access Connectivity Engine Remote Code Execution Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
Microsoft Office Access Connectivity Engine contains an unspecified vulnerability which can allow for remote code execution.
Notes:
https://nvd.nist.gov/vuln/detail/CVE-2021-38646
Added on
2022-03-28
Action due date
2022-04-18
Exploit prediction scoring system (EPSS) score for CVE-2021-38646
5.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 93 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-38646
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
Microsoft Corporation |
References for CVE-2021-38646
-
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38646
CVE-2021-38646 - Security Update Guide - Microsoft - Microsoft Office Access Connectivity Engine Remote Code Execution VulnerabilityPatch;Vendor Advisory
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