Vulnerability · Published Feb 3, 2022 · Assigned by mitre
CVE-2021-42554
High 8.2
In plain English
A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Severity (CVSS NVD)8.2High
Exploit odds (30 days)0.3%top 74.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue was discovered in Insyde InsydeH2O with Kernel 5.0 before 05.08.42, Kernel 5.1 before 05.16.42, Kernel 5.2 before 05.26.42, Kernel 5.3 before 05.35.42, Kernel 5.4 before 05.42.51, and Kernel 5.5 before 05.50.51. An SMM memory corruption vulnerability in FvbServicesRuntimeDxe allows a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
Affected products (as reported)
References
- https://www.insyde.com/security-pledge x_refsource_MISC
- https://www.insyde.com/security-pledge/SA-2022012 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220216-0007/ x_refsource_CONFIRM
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf x_refsource_CONFIRM
- https://www.kb.cert.org/vuls/id/796611
- https://cert-portal.siemens.com/productcert/html/ssa-306654.html