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CVE-2023-22612

26
FAUCET Score

CVE-2023-22612 is a memory corruption vulnerability affecting Insyde InsydeH2O firmware (kernel versions 5.0 through 5.5). A malicious operating system can trigger this flaw by providing malformed arguments to an Insyde SMI handler, leading to memory corruption within the System Management Mode (SMM). This vulnerability carries a high CVSS score of 8.8, indicating a local attack vector with low complexity, and high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
05.0a.11CPE matchmatch criteria
cpe:2.3:a:insyde:insydeh2o:05.0a.11:*:*:*:*:*:*:*
05.18.03CPE matchmatch criteria
cpe:2.3:a:insyde:insydeh2o:05.18.03:*:*:*:*:*:*:*
05.28.03CPE matchmatch criteria
cpe:2.3:a:insyde:insydeh2o:05.28.03:*:*:*:*:*:*:*
05.37.03CPE matchmatch criteria
cpe:2.3:a:insyde:insydeh2o:05.37.03:*:*:*:*:*:*:*
05.45.01CPE matchmatch criteria
cpe:2.3:a:insyde:insydeh2o:05.45.01:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
13.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 44th percentile among its peer group of 17,061 CVEs.

Social Chatter

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.

Media 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

Remediation records are not available for this CVE.

References

research.nccgroup.com / 2023/04/11/stepping-insyde-system-management-mode
Not Applicable
insyde.com / security-pledge
Vendor Advisory
insyde.com / security-pledge/SA-2023019
Vendor Advisory