CVE-2021-38578 is a critical vulnerability affecting Insyde and TianoCore EDK2 implementations, stemming from an integer underflow in SmmEntryPoint's CommBuffer size calculation. With a CVSS score of 9.8, it allows unauthenticated attackers to achieve high impact on confidentiality, integrity, and availability over the network with low attack complexity. While no public exploit code or active exploitation has been confirmed, the vulnerability has garnered some community discussion, indicating awareness within the cybersecurity community.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 202202CPE matchmatch criteria | cpe:2.3:a:tianocore:edk2:*:*:*:*:*:*:*:* | ||
5.0CPE matchmatch criteria | cpe:2.3:o:insyde:kernel:5.0:*:*:*:*:*:*:* | ||
5.1CPE matchmatch criteria | cpe:2.3:o:insyde:kernel:5.1:*:*:*:*:*:*:* | ||
5.2CPE matchmatch criteria | cpe:2.3:o:insyde:kernel:5.2:*:*:*:*:*:*:* | ||
5.3CPE matchmatch criteria | cpe:2.3:o:insyde:kernel:5.3:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.