CVE-2021-45971
Last modified
CVE-2021-45971 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. An issue was discovered in SdHostDriver in Insyde InsydeH2O with kernel 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25. A vulnerability exists in the SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer (CommBufferData).. EPSS estimates a 0.28% chance of exploitation in the next 30 days.
Description
An issue was discovered in SdHostDriver in Insyde InsydeH2O with kernel 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25. A vulnerability exists in the SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer (CommBufferData).
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Insyde | Insydeh2o | >= 5.1, < 5.16.25 |
| Insyde | Insydeh2o | >= 5.2, < 5.26.25 |
| Insyde | Insydeh2o | >= 5.3, < 5.35.25 |
| Insyde | Insydeh2o | >= 5.4, < 5.43.25 |
| Insyde | Insydeh2o | >= 5.5, < 05.51.25 |
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdfThird Party Advisory
- https://security.netapp.com/advisory/ntap-20220216-0004/Third Party Advisory
- https://www.insyde.com/security-pledgeVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdfThird Party Advisory
- https://security.netapp.com/advisory/ntap-20220216-0004/Third Party Advisory
- https://www.insyde.com/security-pledgeVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-45971?
How severe is CVE-2021-45971?
How do I fix CVE-2021-45971?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-45960In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or…8.8
- CVE-2021-45966An issue was discovered in Pascom Cloud Phone System before …9.8
- CVE-2021-45967An issue was discovered in Pascom Cloud Phone System before …9.8
- CVE-2021-45968An issue was discovered in xmppserver jar in the XMPP Server…7.5
- CVE-2021-45969An issue was discovered in AhciBusDxe in Insyde InsydeH2O wi…8.2
- CVE-2021-45970An issue was discovered in IdeBusDxe in Insyde InsydeH2O wit…8.2
- CVE-2021-45972The giftrans function in giftrans 1.12.2 contains a stack-ba…7.1
- CVE-2021-45975In ListCheck.exe in Acer Care Center 4.x before 4.00.3038, a…7.8
- CVE-2021-45977JetBrains IntelliJ IDEA 2021.3.1 Preview, IntelliJ IDEA 2021…9.8
- CVE-2021-45978Foxit PDF Reader and PDF Editor before 11.1 on macOS allow r…7.8
- CVE-2021-45979Foxit PDF Reader and PDF Editor before 11.1 on macOS allow r…7.8
- CVE-2021-45980Foxit PDF Reader and PDF Editor before 11.1 on macOS allow r…7.8
Are you affected by CVE-2021-45971?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST