CVE-2021-38646 is a remote code execution vulnerability affecting Microsoft Office and Microsoft 365 Apps, specifically within the Access Connectivity Engine. With a CVSS score of 7.8 (High), it allows an unauthenticated attacker to achieve high impact on confidentiality, integrity, and availability through a low-complexity attack requiring user interaction. This vulnerability is actively exploited in the wild, including in known ransomware campaigns, despite a lack of public exploit code in common repositories and limited community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:* | ||
2013CPE matchmatch criteria | cpe:2.3:a:microsoft:office:2013:sp1:*:*:-:*:*:* | ||
2013CPE matchmatch criteria | cpe:2.3:a:microsoft:office:2013:sp1:*:*:rt:*:*:* | ||
2016CPE matchmatch criteria | cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:*:* | ||
2019CPE matchmatch criteria | cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.