CVE-2024-55567

MEDIUM

6.7

CVSS Score

Published: June 12, 2025 at 12:00 AM UTC

Updated: June 17, 2026 at 08:11 AM UTC

1 product affected across 1 vendorInsydeH2O

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Severity

MEDIUM6.7

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

Improper input validation was discovered in UsbCoreDxe in Insyde InsydeH2O kernel 5.4 before 05.47.01, 5.5 before 05.55.01, 5.6 before 05.62.01, and 5.7 before 05.71.01. The SMM module has an SMM call out vulnerability which can be used to write arbitrary memory inside SMRAM and execute arbitrary code at SMM level.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

InsydeH2O · Insyde

95%

5.4 ≤ v < 5.4.05.47.015.5 ≤ v < 5.5.05.55.015.6 ≤ v < 5.6.05.62.015.7 ≤ v < 5.7.05.71.01

Affected range stops below 5.4.05.47.01, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.5.05.55.01, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.6.05.62.01, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.7.05.71.01, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.insyde.com/security-pledge/sa-2024018/

References (1)

Vendor Advisory

Source: [email protected]

https://www.insyde.com/security-pledge/sa-2024018/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.7MEDIUM[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-20

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