Security readout for executives and security teams
Plain-English summary
This is a firmware vulnerability in InsydeH2O that could let an attacker gain System Management Mode privileges. That level runs below the operating system, making compromise difficult to detect and recover from. Public source data does not provide CVSS scoring or evidence of active exploitation.
Executive priority
Prioritize identification and vendor-guided firmware remediation for exposed platforms. The business risk is high because successful compromise would occur below the operating system, but urgency is tempered by no provided evidence of active exploitation.
Technical view
StorageSecurityCommandDxe in Insyde InsydeH2O Kernel 5.1 before 05.14.28, 5.2 before 05.24.28, and 5.3 before 05.32.25 has an SMM callout vulnerability. Exploitation could hijack execution flow in SMM and escalate privileges to SMM.
Likely exposure
Exposure is most likely on systems whose firmware uses the affected InsydeH2O kernel branches. The bundle cites Insyde, NetApp, Siemens, and CERT/CC sources, but does not enumerate all downstream affected device models.
Exploitation context
The provided data says exploitation could escalate privileges to SMM. It does not include exploit maturity, public exploit details, or KEV listing evidence. Treat active exploitation as unconfirmed from these sources.
Researcher notes
Evidence is limited to high-level advisory data. Validate downstream exposure through OEM firmware inventories and vendor advisories, not product assumptions. No CVSS, CWE, exploit status, or complete affected model list is provided in the bundle.
Mitigation direction
- Review Insyde SA-2022008 and relevant OEM firmware advisories.
- Prioritize firmware updates for systems using affected InsydeH2O kernel branches.
- Check NetApp and Siemens advisories if those vendors are in scope.
- Use firmware change controls, including backup and rollback planning.
Validation and detection
- Inventory BIOS/firmware vendors and InsydeH2O kernel versions.
- Compare versions against affected thresholds in the CVE description.
- Map hardware models to Insyde, OEM, CERT/CC, NetApp, and Siemens guidance.
- Confirm updated firmware versions after remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-42113 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.insyde.com/security-pledgeCVE reference · x_refsource_MISC
- https://www.insyde.com/security-pledge/SA-2022008CVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220216-0012/CVE reference · x_refsource_CONFIRM
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdfCVE reference · x_refsource_CONFIRM
- https://www.kb.cert.org/vuls/id/796611CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.