CVE-2025-4277
Tcg2Smm: improper input validation may lead to arbitrary code execution
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 05.2A.21, 05.39.21, 05.47.21, 05.55.21, 05.62.21, and 1 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
Tcg2Smm has a vulnerability which can be used to write arbitrary memory inside SMRAM and execute arbitrary code at SMM level.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Insyde Software InsydeH2O
From Kernel 5.2 · fixed in 05.2A.21; From Kernel 5.3 · fixed in 05.39.21; From Kernel 5.4 · fixed in 05.47.21; From Kernel 5.5 · fixed in 05.55.21; From Kernel 5.6 · fixed in 05.62.21; From Kernel 5.7 · fixed in 05.71.21