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.

Published: 2024-04-26 Last update: 2025-07-29 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-47252 is rated Low Risk (34.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.08%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-47252

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-07-30 0.03% 0.08% +0.05%
2 2025-04-15 0.06% 0.03% -0.03%
3 2025-03-17 — 0.06% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-47252

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.3 3.1 MEDIUM
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.0 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-47252

Affected software / configurations for CVE-2023-47252

Vendor Product Version Raw CPE
insyde kernel >= 5.2, < 5.28.45 cpe:2.3:o:insyde:kernel:*:*:*:*:*:*:*:*
insyde kernel >= 5.3, < 5.37.45 cpe:2.3:o:insyde:kernel:*:*:*:*:*:*:*:*
insyde kernel >= 5.4, < 5.45.45 cpe:2.3:o:insyde:kernel:*:*:*:*:*:*:*:*
insyde kernel >= 5.5, < 5.53.45 cpe:2.3:o:insyde:kernel:*:*:*:*:*:*:*:*
insyde kernel >= 5.6, < 5.60.45 cpe:2.3:o:insyde:kernel:*:*:*:*:*:*:*:*

References for CVE-2023-47252

cvelogic Threat Intelligence