cvelistv5 - cve-2025-2486

CVE-2025-2486 (GCVE-0-2025-2486)

Vulnerability from cvelistv5 – Published: 2025-11-26 17:33 – Updated: 2025-11-26 18:25

Summary

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.

Severity ?

3.7 (Low)


                        
                          CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:U

CWE

CWE-489 - Active Debug Code

Assigner

canonical

References

URL

Tags

https://bugs.launchpad.net/ubuntu/+source/edk2/+b…

Impacted products

	Vendor	Product	Version
	Ubuntu	edk2	Affected: 2024.05 , < 2024.05-2ubuntu0.3 (dpkg) Affected: 2024.02 , < 2024.02-2ubuntu0.3 (dpkg)

Credits

Dann Frazier

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2025-2486

Vulnerability from fkie_nvd - Published: 2025-11-26 18:15 - Updated: 2025-12-01 15:39

Severity ?

3.7 (Low) - CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:U

Summary

References

	URL	Tags
	security@ubuntu.com	https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2101797

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2025-2486",
  "lastModified": "2025-12-01T15:39:53.100",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
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          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 3.7,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
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GHSA-G658-H443-XPR6

Vulnerability from github – Published: 2025-11-26 18:31 – Updated: 2025-11-26 18:31

Details

Severity ?

3.7 (Low)


                  
                    CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:U

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-2486"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-489"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-26T18:15:48Z",
    "severity": "LOW"
  },
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  "id": "GHSA-g658-h443-xpr6",
  "modified": "2025-11-26T18:31:04Z",
  "published": "2025-11-26T18:31:04Z",
  "references": [
    {
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-2486"
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      "type": "CVSS_V4"
    }
  ]
}

MSRC_CVE-2025-2486

Vulnerability from csaf_microsoft - Published: 2025-11-02 00:00 - Updated: 2025-11-29 01:02

Summary

UEFI Shell accessible in AAVMF with Secure Boot enabled on Ubuntu

Notes

Additional Resources

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer

The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

JSON

To clipboard

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
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    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2025-2486 UEFI Shell accessible in AAVMF with Secure Boot enabled on Ubuntu - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-2486.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "UEFI Shell accessible in AAVMF with Secure Boot enabled on Ubuntu",
    "tracking": {
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        "date": "2025-12-03T22:59:15.060Z",
        "engine": {
          "name": "MSRC Generator",
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        }
      },
      "id": "msrc_CVE-2025-2486",
      "initial_release_date": "2025-11-02T00:00:00.000Z",
      "revision_history": [
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          "date": "2025-11-29T01:02:03.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
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      "status": "final",
      "version": "1"
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  "product_tree": {
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      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-2486 UEFI Shell accessible in AAVMF with Secure Boot enabled on Ubuntu - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-2486.json"
        }
      ],
      "title": "UEFI Shell accessible in AAVMF with Secure Boot enabled on Ubuntu"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2025-2486 (GCVE-0-2025-2486)

FKIE_CVE-2025-2486

GHSA-G658-H443-XPR6

MSRC_CVE-2025-2486

Tags

Sightings

Nomenclature