01 Record
CVE-2025-4277
Tcg2Smm: improper input validation may lead to arbitrary code execution
HighPUBLISHEDCNA: Insyde
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
02 Description
Tcg2Smm: improper input validation may lead to arbitrary code execution
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.14% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 3.4% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- NVD analysis status
- Deferred. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2025-08-13 01:46Z1 YR AGO
- Last updated
- 2025-08-14 05:54Z1 YR AGO
- Reserved
- 2025-05-05
- Assigning CNA
- Insyde
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.5)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-20Improper Input ValidationClass
- Data version
- 5.1
- Document digest
- ec7f1c6e81ca8a97cf19fd25545b52c86215a68c696316a77d74cd46969eeb52
05 Affected products
VendorProductVersionsPlatforms
Insyde SoftwareInsydeH2OKernel 5.2 to < 05.2A.21, Kernel 5.3 to < 05.39.21, Kernel 5.4 to < 05.47.21, Kernel 5.5 to < 05.55.21, Kernel 5.6 to < 05.62.21, Kernel 5.7 to < 05.71.21—
06 References
- www.insyde.comhttps://www.insyde.com/security-pledge/sa-2025005/
07 Remediation
Kernel 5.2, Version 05.2A.21 Kernel 5.3, Version 05.39.21 Kernel 5.4, Version 05.47.21 Kernel 5.5, Version 05.55.21 Kernel 5.6, Version 05.62.21 Kernel 5.7, Version 05.71.21