Vulnerability-Lookup

CVE-2026-14296 (GCVE-0-2026-14296)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:58 – Updated: 2026-09-08 15:00

Title

nRF54H20: MCUBoot can be tricked to executing unauthenticated code

Summary

When using the Direct XIP update strategy, the main application image starts other cores (i.e. radio core), based on the currently active slot without additional verification. The MCUboot in the bare (upstream) configuration assumes that if there is at least a single slot for each image available, the system is bootable and continues the boot process. This may lead to a situation when MCUboot picks different slot for different images (i.e. (a) for the main application and (b) for the radio image), boots the main application (from slot (a)) that afterwards starts the radio image by providing an address of the unauthenticated slot ((a) instead of (b)).

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:00 UTC

CWE

CWE-347 - Improper verification of cryptographic signature

Assigner

YesWeHack ENISA root

References

1 reference

URL	Tags
https://docs.nordicsemi.com/r/bundle/struct_sa/pa…

Impacted products

1 product

Vendor	Product	Version	CPE status
Nordic Semiconductor ASA	nRF54H20	Affected: 3.2 Affected: 3.3	guessed

Credits

Reported externally through PSIRT

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-14296

Vulnerability from fkie_nvd - Published: 2026-09-07 08:17 - Updated: 2026-09-09 15:50

Severity

7.5 (High) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	30a5e7fb-040d-440a-8cdf-a4a2068ce72e	https://docs.nordicsemi.com/r/bundle/struct_sa/page/struct/sa.html

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "nRF54H20",
          "vendor": "Nordic Semiconductor ASA",
          "versions": [
            {
              "status": "affected",
              "version": "3.2"
            },
            {
              "status": "affected",
              "version": "3.3"
            }
          ]
        }
      ],
      "source": "30a5e7fb-040d-440a-8cdf-a4a2068ce72e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "When using the Direct XIP\nupdate strategy, the main application image starts other cores (i.e. radio\ncore), based on the currently active slot without additional verification. The\nMCUboot in the bare (upstream) configuration assumes that if there is at least\na single slot for each image available, the system is bootable and continues\nthe boot process. This may lead to a situation when MCUboot picks different\nslot for different images (i.e. (a) for the main application and (b) for the\nradio image), boots the main application (from slot (a)) that afterwards starts\nthe radio image by providing an address of the unauthenticated slot ((a)\ninstead of (b))."
    }
  ],
  "id": "CVE-2026-14296",
  "lastModified": "2026-09-09T15:50:19.447",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.9,
        "source": "30a5e7fb-040d-440a-8cdf-a4a2068ce72e",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-08T15:00:28.845002Z",
          "version": "2.0.3"
        }
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  "published": "2026-09-07T08:17:11.773",
  "references": [
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      "source": "30a5e7fb-040d-440a-8cdf-a4a2068ce72e",
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  "sourceIdentifier": "30a5e7fb-040d-440a-8cdf-a4a2068ce72e",
  "vulnStatus": "Awaiting Analysis",
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}

GHSA-J59P-MQMR-FCGH

Vulnerability from github – Published: 2026-09-07 09:31 – Updated: 2026-09-07 09:31

Details

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-14296"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-07T08:17:11Z",
    "severity": "HIGH"
  },
  "details": "When using the Direct XIP\nupdate strategy, the main application image starts other cores (i.e. radio\ncore), based on the currently active slot without additional verification. The\nMCUboot in the bare (upstream) configuration assumes that if there is at least\na single slot for each image available, the system is bootable and continues\nthe boot process. This may lead to a situation when MCUboot picks different\nslot for different images (i.e. (a) for the main application and (b) for the\nradio image), boots the main application (from slot (a)) that afterwards starts\nthe radio image by providing an address of the unauthenticated slot ((a)\ninstead of (b)).",
  "id": "GHSA-j59p-mqmr-fcgh",
  "modified": "2026-09-07T09:31:38Z",
  "published": "2026-09-07T09:31:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14296"
    },
    {
      "type": "WEB",
      "url": "https://docs.nordicsemi.com/r/bundle/struct_sa/page/struct/sa.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-14296 (GCVE-0-2026-14296)

FKIE_CVE-2026-14296

GHSA-J59P-MQMR-FCGH

Tags

Sightings

Nomenclature