Security readout for executives and security teams
Plain-English summary
This CVE concerns an example encrypted private key included in TianoCore EDK II’s IpSecDxe.efi. If that component was shipped into firmware, it could create trust or key-management risk. The public record is sparse, so business urgency depends on whether affected EDK II code reached production firmware.
Executive priority
Assign ownership to firmware or product security teams for exposure confirmation. Escalate priority if affected EDK II code appears in shipped products, because firmware remediation can require vendor coordination and longer deployment cycles.
Technical view
The source bundle identifies EDK II edk2-stable201905 as affected and describes example encrypted private key material in IpSecDxe.efi. No CVSS, CWE, exploit method, patch version, or detailed affected configuration is provided in the cited records.
Likely exposure
Exposure is most plausible in firmware builds or downstream products based on TianoCore EDK II edk2-stable201905 that include IpSecDxe.efi. The bundle does not identify specific OEM devices, operating systems, or deployed platforms.
Exploitation context
The source bundle does not show active exploitation, and KEV is false. It also does not provide exploit mechanics or evidence of public weaponization. Treat this as a supply-chain and firmware review item until vendor-specific impact is confirmed.
Researcher notes
Evidence is incomplete. The record names TianoCore EDK II edk2-stable201905 and IpSecDxe.efi but lacks scoring, root-cause detail, affected downstream products, and fixed versions. Avoid broad claims beyond the cited records.
Mitigation direction
- Check TianoCore Bugzilla and vendor firmware guidance for remediation details.
- Inventory firmware builds using EDK II edk2-stable201905 and IpSecDxe.efi.
- Confirm no production firmware ships example private key material.
- Coordinate firmware updates through the platform or device vendor.
- Document affected build decisions and compensating controls.
Validation and detection
- Review SBOMs, build manifests, or firmware source provenance for edk2-stable201905.
- Confirm whether IpSecDxe.efi is included in shipped firmware images.
- Compare vendor advisories against deployed device models and firmware versions.
- Track the CVE record for added CVSS, CWE, or fix details.
- Validate remediation only through approved firmware build and signing workflows.
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-2021-28213 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://bugzilla.tianocore.org/show_bug.cgi?id=1866CVE reference · x_refsource_MISC
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.