CVE-2025-4277— Tcg2Smm: improper input validation may lead to arbitrary code execution
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I. Basic Information for CVE-2025-4277
Vulnerability Information
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Vulnerability Title
Tcg2Smm: improper input validation may lead to arbitrary code execution
Source: NVD (National Vulnerability Database)
Vulnerability Description
Tcg2Smm has a vulnerability which can be used to write arbitrary memory inside SMRAM and execute arbitrary code at SMM level.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
InsydeH2O 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
InsydeH2O是中国系微（Insyde）公司的一款可定制固件代码库。 InsydeH2O存在安全漏洞，该漏洞源于可写入SMRAM任意内存并在SMM级别执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Insyde Software | InsydeH2O | Kernel 5.2 ~ 05.2A.21 | - |
II. Public POCs for CVE-2025-4277
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Insyde Software · 2025-08-13 · 3 CVEs total
| CVE-2025-4276 | 7.5 HIGH | UsbCoreDxe: improper input validation may lead to arbitrary code execution |
| CVE-2025-4410 | 7.5 HIGH | SetupUtility: A buffer overflow vulnerability leads to arbitrary code execution. |
IV. Related Vulnerabilities
Same product: InsydeH2O
- CVE-2025-10451
H19Int15CallbackSmm: SMM memory corruption vulnerability in - CVE-2025-4410
SetupUtility: A buffer overflow vulnerability leads to arbit - CVE-2025-4276
UsbCoreDxe: improper input validation may lead to arbitrary - CVE-2025-4426
SetupAutomationSmm : SMRAM memory contents leak / informatio - CVE-2025-4425
SetupAutomationSmm: Stack overflow vulnerability in SMI hand
Same vendor: Insyde Software
- CVE-2025-12053
egwindrvx64.sys is potentially vulnerable to a buffer overfl - CVE-2025-12052
egwindrv.sys is potentially vulnerable to a buffer overflow. - CVE-2025-12051
H2OFFT64.sys is potentially vulnerable to a buffer overflow. - CVE-2025-12050
In H2OFFT32.sys is potentially vulnerable to a buffer overfl - CVE-2025-10451
H19Int15CallbackSmm: SMM memory corruption vulnerability in
Same weakness: CWE-20
V. Comments for CVE-2025-4277
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