CVE-2022-35893 is a high-severity SMM memory corruption vulnerability affecting Insyde InsydeH2O firmware versions 5.0 through 5.5. An authenticated attacker with high privileges can exploit this flaw to write predictable data to SMRAM, potentially escalating privileges to System Management Mode (SMM) with full impact on confidentiality, integrity, and availability. While the CVSS score is 8.2, there is no known public exploit code, active exploitation, or significant community discussion, suggesting a low current threat landscape despite the severe potential impact.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.0, < 05.09.37CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | ||
>= 5.1, < 05.17.37CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | ||
>= 5.2, < 05.27.29CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | ||
>= 5.3, < 05.36.29CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | ||
>= 5.4, < 05.44.29CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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.
Remediation records are not available for this CVE.