How severe is CVE-2023-28468?

CVE-2023-28468 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-28468 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28468?

CVE-2023-28468 affects Insyde Kernel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28468?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-28468 published?

CVE-2023-28468 was published on 2023-08-03 and last updated on 2026-06-17.

CVE-2023-28468

CVE-2023-28468 is a medium-severity vulnerability in Insyde Kernel with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Insyde Kernel
Published: 2023-08-03
Last modified: 2026-06-17

Description

An issue was discovered in FvbServicesRuntimeDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. The FvbServicesRuntimeDxe SMM module exposes an SMI handler that allows an attacker to interact with the SPI flash at run-time from the OS.

Frequently asked questions

What is CVE-2023-28468?: An issue was discovered in FvbServicesRuntimeDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. The FvbServicesRuntimeDxe SMM module exposes an SMI handler that allows an attacker to interact with the SPI flash at run-time from the OS.
How severe is CVE-2023-28468?: CVE-2023-28468 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-28468 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28468?: CVE-2023-28468 affects Insyde Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28468?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-28468 published?: CVE-2023-28468 was published on 2023-08-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:insyde:kernel:*:*:*:*:*:*:*:*

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