CVE-2023-47252
CVE-2023-47252 is a medium-severity vulnerability in Insyde Kernel with a CVSS 3.x base score of 6.3. 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-787.
Key facts
- Severity: Medium (CVSS 3.x base score 6.3)
- EPSS exploit prediction: 0% (4th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2023-51383
- Weakness: CWE-787
- Affected product: Insyde Kernel
- Published:
- Last modified:
Description
An issue was discovered in PnpSmm in Insyde InsydeH2O with kernel 5.0 through 5.6. There is a possible out-of-bounds access in the SMM communication buffer, leading to tampering. The PNP-related SMI sub-functions do not verify data size before getting it from the communication buffer, which could lead to possible circumstances where the data immediately following the command buffer could be destroyed with a fixed value. This is fixed in kernel 5.2 v05.28.45, kernel 5.3 v05.37.45, kernel 5.4 v05.45.45, kernel 5.5 v05.53.45, and kernel 5.6 v05.60.45.
Frequently asked questions
- What is CVE-2023-47252?
- An issue was discovered in PnpSmm in Insyde InsydeH2O with kernel 5.0 through 5.6. There is a possible out-of-bounds access in the SMM communication buffer, leading to tampering. The PNP-related SMI sub-functions do not verify data size before getting it from the communication buffer, which could lead to possible circumstances where the data immediately following the command buffer could be destroyed with a fixed value. This is fixed in kernel 5.2 v05.28.45, kernel 5.3 v05.37.45, kernel 5.4 v05.45.45, kernel 5.5 v05.53.45, and kernel 5.6 v05.60.45.
- How severe is CVE-2023-47252?
- CVE-2023-47252 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
- Is CVE-2023-47252 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-47252?
- CVE-2023-47252 affects Insyde Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-47252?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2023-47252 have an EU (EUVD) identifier?
- Yes. CVE-2023-47252 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-51383.
- When was CVE-2023-47252 published?
- CVE-2023-47252 was published on 2024-04-26 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:insyde:kernel:*:*:*:*:*:*:*:*
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