GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration
Common Weakness Enumeration

CWE-1342

Allowed

Information Exposure through Microarchitectural State after Transient Execution

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The processor does not properly clear microarchitectural state after incorrect microcode assists or speculative execution, resulting in transient execution.

5 vulnerabilities reference this CWE, most recent first.

CVE-2026-18796 (GCVE-0-2026-18796)

Vulnerability from cvelistv5 – Published: 2026-09-07 08:07 – Updated: 2026-09-10 11:17
VLAI
Title
QSPI flash encryption side-channel leakage
Summary
Any application that uses external QSPI flash for encrypted XIP on nRF5340 and relies on that encryption for confidentiality and/or integrity of the externally stored code. No specific nRF Connect SDK version is the root cause; the weakness is in the on-the-fly decryption scheme.
Severity
6.8 (Medium)
CVSS:4.0/AV:P/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:01 UTC
CWE
  • CWE-1342 - Information exposure through microarchitectural state after transient execution
Assigner
References
Impacted products
Vendor Product Version
Nordic Semiconductor ASA nRF5340 Affected: All build codes
Create a notification for this product.
Credits
Reported externally through PSIRT by Daniël Eijkman and Damian Vizár (CSEM)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-18796",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-08T15:01:20.642344Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-08T15:01:26.689Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "nRF5340",
          "vendor": "Nordic Semiconductor ASA",
          "versions": [
            {
              "status": "affected",
              "version": "All build codes"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Reported externally through PSIRT by Dani\u00ebl Eijkman and Damian Viz\u00e1r (CSEM)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cspan\u003eAny application that\n     uses external QSPI flash for encrypted XIP on nRF5340 and relies on that\n     encryption for confidentiality and/or integrity of the externally stored\n     code. No specific nRF Connect SDK version is the root cause; the weakness\n     is in the on-the-fly decryption scheme.\u003c/span\u003e\u003cbr\u003e"
            }
          ],
          "value": "Any application that\n     uses external QSPI flash for encrypted XIP on nRF5340 and relies on that\n     encryption for confidentiality and/or integrity of the externally stored\n     code. No specific nRF Connect SDK version is the root cause; the weakness\n     is in the on-the-fly decryption scheme."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-37",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-37 Retrieve Embedded Sensitive Data"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "attackVector": "PHYSICAL",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:P/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1342",
              "description": "CWE-1342 Information exposure through microarchitectural state after transient execution",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-10T11:17:10.632Z",
        "orgId": "30a5e7fb-040d-440a-8cdf-a4a2068ce72e",
        "shortName": "YesWeHack"
      },
      "references": [
        {
          "url": "https://docs.nordicsemi.com/r/bundle/struct_sa/page/struct/sa.html"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "QSPI flash encryption side-channel leakage",
      "x_generator": {
        "engine": "Vulnogram 1.0.4"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "30a5e7fb-040d-440a-8cdf-a4a2068ce72e",
    "assignerShortName": "YesWeHack",
    "cveId": "CVE-2026-18796",
    "datePublished": "2026-09-07T08:07:31.633Z",
    "dateReserved": "2026-08-04T09:40:15.178Z",
    "dateUpdated": "2026-09-10T11:17:10.632Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2023-28746 (GCVE-0-2023-28746)

Vulnerability from cvelistv5 – Published: 2024-03-14 16:45 – Updated: 2026-05-12 10:52
VLAI
Summary
Information exposure through microarchitectural state after transient execution from some register files for some Intel(R) Atom(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
Severity
6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-14 18:58 UTC
CWE
  • information disclosure
  • CWE-1342 - Information exposure through microarchitectural state after transient execution from some register files
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-28746",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-03-14T18:58:08.088339Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:28:56.120Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-04-26T20:03:13.216Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00898.html",
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00898.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZON4TLXG7TG4A2XZG563JMVTGQW4SF3A/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/H63LGAQXPEVJOES73U4XK65I6DASOAAG/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EIUICU6CVJUIB6BPJ7P5QTPQR5VOBHFK/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2024/03/12/13"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00003.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
          },
          {
            "url": "http://xenbits.xen.org/xsa/advisory-452.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-12T10:52:19.004Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Intel(R) Atom(R) Processors",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "See references"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Information exposure through microarchitectural state after transient execution from some register files for some Intel(R) Atom(R) Processors may allow an authenticated user to potentially enable information disclosure via local access."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "information disclosure",
              "lang": "en"
            },
            {
              "cweId": "CWE-1342",
              "description": "Information exposure through microarchitectural state after transient execution from some register files",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-06-25T22:08:21.946Z",
        "orgId": "6dda929c-bb53-4a77-a76d-48e79601a1ce",
        "shortName": "intel"
      },
      "references": [
        {
          "name": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00898.html",
          "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00898.html"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZON4TLXG7TG4A2XZG563JMVTGQW4SF3A/"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/H63LGAQXPEVJOES73U4XK65I6DASOAAG/"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EIUICU6CVJUIB6BPJ7P5QTPQR5VOBHFK/"
        },
        {
          "url": "http://www.openwall.com/lists/oss-security/2024/03/12/13"
        },
        {
          "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00003.html"
        },
        {
          "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6dda929c-bb53-4a77-a76d-48e79601a1ce",
    "assignerShortName": "intel",
    "cveId": "CVE-2023-28746",
    "datePublished": "2024-03-14T16:45:50.370Z",
    "dateReserved": "2023-05-05T03:00:03.623Z",
    "dateUpdated": "2026-05-12T10:52:19.004Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2022-40982 (GCVE-0-2022-40982)

Vulnerability from cvelistv5 – Published: 2023-08-11 02:37 – Updated: 2025-02-13 16:33
VLAI
Summary
Information exposure through microarchitectural state after transient execution in certain vector execution units for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
Severity
6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-31 20:33 UTC
CWE
  • information disclosure
  • CWE-1342 - Information exposure through microarchitectural state after transient execution
Assigner
References
Impacted products
Vendor Product Version
n/a Intel(R) Processors Affected: See references
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T12:28:42.939Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://xenbits.xen.org/xsa/advisory-435.html"
          },
          {
            "name": "http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00828.html",
            "tags": [
              "x_transferred"
            ],
            "url": "http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00828.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://downfall.page"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://aws.amazon.com/security/security-bulletins/AWS-2023-007/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://access.redhat.com/solutions/7027704"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://xenbits.xen.org/xsa/advisory-435.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00013.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20230811-0001/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2023/dsa-5474"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2023/dsa-5475"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T7WO5JM74YJSYAE5RBV4DC6A4YLEKWLF/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OL7WI2TJCWSZIQP2RIOLWHOKLM25M44J/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HKREYYTWUY7ZDNIB2N6H5BUJ3LE5VZPE/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00026.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HKKYIK2EASDNUV4I7EFJKNBVO3KCKGRR/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-40982",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-31T20:33:43.011314Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-31T20:43:52.375Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Intel(R) Processors",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "See references"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Information exposure through microarchitectural state after transient execution in certain vector execution units for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "information disclosure",
              "lang": "en"
            },
            {
              "cweId": "CWE-1342",
              "description": "Information exposure through microarchitectural state after transient execution",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-08-27T02:06:52.425Z",
        "orgId": "6dda929c-bb53-4a77-a76d-48e79601a1ce",
        "shortName": "intel"
      },
      "references": [
        {
          "name": "http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00828.html",
          "url": "http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00828.html"
        },
        {
          "url": "https://downfall.page"
        },
        {
          "url": "https://aws.amazon.com/security/security-bulletins/AWS-2023-007/"
        },
        {
          "url": "https://access.redhat.com/solutions/7027704"
        },
        {
          "url": "https://xenbits.xen.org/xsa/advisory-435.html"
        },
        {
          "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00013.html"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20230811-0001/"
        },
        {
          "url": "https://www.debian.org/security/2023/dsa-5474"
        },
        {
          "url": "https://www.debian.org/security/2023/dsa-5475"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T7WO5JM74YJSYAE5RBV4DC6A4YLEKWLF/"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OL7WI2TJCWSZIQP2RIOLWHOKLM25M44J/"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HKREYYTWUY7ZDNIB2N6H5BUJ3LE5VZPE/"
        },
        {
          "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00026.html"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HKKYIK2EASDNUV4I7EFJKNBVO3KCKGRR/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6dda929c-bb53-4a77-a76d-48e79601a1ce",
    "assignerShortName": "intel",
    "cveId": "CVE-2022-40982",
    "datePublished": "2023-08-11T02:37:05.423Z",
    "dateReserved": "2022-09-27T00:28:29.203Z",
    "dateUpdated": "2025-02-13T16:33:03.126Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-36C8-X5G7-W9X4

Vulnerability from github – Published: 2024-03-14 18:30 – Updated: 2026-05-12 12:31
VLAI
Details

Information exposure through microarchitectural state after transient execution from some register files for some Intel(R) Atom(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Severity
6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2023-28746"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1342"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-14T17:15:50Z",
    "severity": "MODERATE"
  },
  "details": "Information exposure through microarchitectural state after transient execution from some register files for some Intel(R) Atom(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.",
  "id": "GHSA-36c8-x5g7-w9x4",
  "modified": "2026-05-12T12:31:35Z",
  "published": "2024-03-14T18:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28746"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00003.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EIUICU6CVJUIB6BPJ7P5QTPQR5VOBHFK"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/H63LGAQXPEVJOES73U4XK65I6DASOAAG"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZON4TLXG7TG4A2XZG563JMVTGQW4SF3A"
    },
    {
      "type": "WEB",
      "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00898.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2024/03/12/13"
    },
    {
      "type": "WEB",
      "url": "http://xenbits.xen.org/xsa/advisory-452.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-Q9VX-6FW9-4MV8

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

Any application that uses external QSPI flash for encrypted XIP on nRF5340 and relies on that encryption for confidentiality and/or integrity of the externally stored code. No specific nRF Connect SDK version is the root cause; the weakness is in the on-the-fly decryption scheme.

Severity
6.8 (Medium)
CVSS:4.0/AV:P/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-18796"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1342"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-07T09:17:15Z",
    "severity": "MODERATE"
  },
  "details": "Any application that\n     uses external QSPI flash for encrypted XIP on nRF5340 and relies on that\n     encryption for confidentiality and/or integrity of the externally stored\n     code. No specific nRF Connect SDK version is the root cause; the weakness\n     is in the on-the-fly decryption scheme.",
  "id": "GHSA-q9vx-6fw9-4mv8",
  "modified": "2026-09-07T09:31:40Z",
  "published": "2026-09-07T09:31:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18796"
    },
    {
      "type": "WEB",
      "url": "https://docs.nordicsemi.com/r/bundle/struct_sa/page/struct/sa.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:P/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}
Mitigation
Architecture and Design Requirements

Hardware ensures that no illegal data flows from faulting micro-ops exists at the microarchitectural level.

Mitigation
Build and Compilation

Include instructions that explicitly remove traces of unneeded computations from software interactions with microarchitectural elements e.g. lfence, sfence, mfence, clflush.

CAPEC-696: Load Value Injection

An adversary exploits a hardware design flaw in a CPU implementation of transient instruction execution in which a faulting or assisted load instruction transiently forwards adversary-controlled data from microarchitectural buffers. By inducing a page fault or microcode assist during victim execution, an adversary can force legitimate victim execution to operate on the adversary-controlled data which is stored in the microarchitectural buffers. The adversary can then use existing code gadgets and side channel analysis to discover victim secrets that have not yet been flushed from microarchitectural state or hijack the system control flow.

← Back to the CWE list