CVE-2020-5953
A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that derefere
CVSS
7.5
High
EPSS
0.3%
p21
KEV
—
Exploit Today
6
0-100
Published: Feb 3, 2022 · Last modified: Aug 11, 2026
0.3%EPSS · 30 days0.3%
2026-08-082026-09-05
A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20220222-0005/
- www.insyde.comhttps://www.insyde.com/products
- www.insyde.comhttps://www.insyde.com/security-pledge
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20220222-0005/
- www.insyde.comhttps://www.insyde.com/products
- www.insyde.comhttps://www.insyde.com/security-pledge
- www.kb.cert.orghttps://www.kb.cert.org/vuls/id/796611
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-306654.html
No related CVEs by CWE or product.