CVE-2024-27353

HIGH

7.4

CVSS Score

Published: May 15, 2024 at 02:18 PM UTC

Updated: June 17, 2026 at 07:19 AM UTC

1 product affected across 1 vendorInsydeH2O

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Severity

HIGH7.4

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

A memory corruption vulnerability in SdHost and SdMmcDevice in Insyde InsydeH2O kernel 5.2 before 05.29.09, kernel 5.3 before 05.38.09, kernel 5.4 before 05.46.09, kernel 5.5 before 05.54.09, and kernel 5.6 before 05.61.09 could lead to escalating privileges in SMM.

Affected

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

InsydeH2O · Insyde

95%

5.2 ≤ v < 05.38.095.3 ≤ v < 05.46.095.4 ≤ v < 05.54.095.5 ≤ v < 05.29.095.6 ≤ v < 05.61.095.2 5.3 5.4 5.5 5.6

Affected range stops below 05.29.09, so it looks safe — our inference, not a vendor statement

Affected range stops below 05.38.09, so it looks safe — our inference, not a vendor statement

Affected range stops below 05.46.09, so it looks safe — our inference, not a vendor statement

Affected range stops below 05.54.09, so it looks safe — our inference, not a vendor statement

Affected range stops below 05.61.09, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: [email protected]

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

Source: [email protected]

https://www.insyde.com/security-pledge/SA-2024001

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

7.4HIGHCISA-ADP

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

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-822

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