CVE-2025-4277 describes a high-severity vulnerability in Tcg2Smm, allowing attackers to write arbitrary memory within SMRAM and execute arbitrary code at the SMM level. This local attack requires high privileges and has a high impact on confidentiality, integrity, and availability, as reflected by its CVSS score of 7.5. Currently, there is no evidence of active exploitation, and no public exploit code or community discussion has been identified.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Insyde Software | InsydeH2O | >= Kernel 5.2, < 05.2A.21, >= Kernel 5.3, < 05.39.21, >= Kernel 5.4, < 05.47.21, >= Kernel 5.5, < 05.55.21, >= Kernel 5.6, < 05.62.21, >= Kernel 5.7, < 05.71.21CNA affecteddefault unknown |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.