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High severity8.8NVD Advisory· Published Nov 26, 2025· Updated Jun 17, 2026

CVE-2025-2486

CVE-2025-2486

Description

The Ubuntu edk2 UEFI firmware packages accidentally allowed the UEFI Shell to be accessed in Secure Boot environments, possibly allowing bypass of Secure Boot constraints. Versions 2024.05-2ubuntu0.3 and 2024.02-2ubuntu0.3 disable the Shell. Some previous versions inserted a secure-boot-based decision to continue running inside the Shell itself, which is believed to be sufficient to enforce Secure Boot restrictions. This is an additional repair on top of the incomplete fix for CVE-2023-48733.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

4
  • Tianocore/Edk22 versions
    cpe:2.3:a:tianocore:edk2:202402*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:tianocore:edk2:202402*:*:*:*:*:*:*:*
    • cpe:2.3:a:tianocore:edk2:202405:*:*:*:*:*:*:*
  • Ubuntu/edk2 UEFI firmwarellm-create
    Range: 2024.05-2ubuntu0.3, 2024.02-2ubuntu0.3
  • Ubuntu/edk2cpe-rescue
    Range: 2024.05

Patches

Vulnerability mechanics

References

1

News mentions

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