CVE-2023-39284 is a medium-severity vulnerability affecting Insyde InsydeH2O firmware versions 5.0 through 5.5. The flaw lies within the IhisiServicesSmm component, where arbitrary calls to SetVariable with unsanitized arguments in the SMI handler can lead to unauthorized modifications. With a CVSS score of 5.5, this vulnerability requires local access and low privileges to achieve high integrity impact, though confidentiality and availability are not affected. Currently, there is no known public exploit code, active exploitation, or significant community discussion, and it is not listed on the KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.2, < 5.2.05.28.33CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | ||
>= 5.3, < 5.3.05.37.33CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | ||
>= 5.4, < 5.4.05.45.33CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | ||
>= 5.5, < 5.5.05.53.33CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | ||
>= 5.6, < 5.6.05.60.33CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.