Vulnerability-Lookup

CVE-2026-26122 (GCVE-0-2026-26122)

Vulnerability from cvelistv5 – Published: 2026-03-05 22:18 – Updated: 2026-03-09 20:27 Exclusively Hosted Service

Title

Microsoft ACI Confidential Containers Information Disclosure Vulnerability

Summary

Initialization of a resource with an insecure default in Azure Compute Gallery allows an authorized attacker to disclose information over a network.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

CWE

CWE-1188 - Initialization of a Resource with an Insecure Default

Assigner

microsoft

References

URL

Tags

https://msrc.microsoft.com/update-guide/vulnerabi…

vendor-advisorypatch

Impacted products

	Vendor	Product	Version
	Microsoft	Microsoft ACI Confidential Containers	Affected: -

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-26122",
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-09T20:26:58.642440Z",
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      "datePublic": "2026-03-05T16:00:00.000Z",
      "descriptions": [
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      "metrics": [
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            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
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      "providerMetadata": {
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        }
      ],
      "tags": [
        "exclusively-hosted-service"
      ],
      "title": "Microsoft ACI Confidential Containers Information Disclosure Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
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    "dateUpdated": "2026-03-09T20:27:09.343Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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    "vulnrichment": {
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}

GHSA-C993-389P-JQHF

Vulnerability from github – Published: 2026-03-06 00:31 – Updated: 2026-03-06 00:31

Details

Microsoft ACI Confidential Containers Information Disclosure Vulnerability

Severity ?

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-26122"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1188"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-05T23:16:19Z",
    "severity": "MODERATE"
  },
  "details": "Microsoft ACI Confidential Containers Information Disclosure Vulnerability",
  "id": "GHSA-c993-389p-jqhf",
  "modified": "2026-03-06T00:31:34Z",
  "published": "2026-03-06T00:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26122"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26122"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

MSRC_CVE-2026-26122

Vulnerability from csaf_microsoft - Published: 2026-03-05 08:00 - Updated: 2026-03-06 08:00

Summary

Microsoft ACI Confidential Containers Information Disclosure Vulnerability

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.

Customer Action

Not required. The vulnerability documented by this CVE requires no customer action to resolve.

JSON

To clipboard

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Microsoft Offensive Research \u0026amp; Security Engineering"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Critical"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "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"
      },
      {
        "category": "general",
        "text": "Not required. The vulnerability documented by this CVE requires no customer action to resolve.",
        "title": "Customer Action"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-26122 Microsoft ACI Confidential Containers Information Disclosure Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26122"
      },
      {
        "category": "self",
        "summary": "CVE-2026-26122 Microsoft ACI Confidential Containers Information Disclosure Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-26122.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
      },
      {
        "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": "Microsoft ACI Confidential Containers Information Disclosure Vulnerability",
    "tracking": {
      "current_release_date": "2026-03-06T08:00:00.000Z",
      "generator": {
        "date": "2026-03-06T17:22:49.205Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-26122",
      "initial_release_date": "2026-03-05T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-03-05T08:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2026-03-06T08:00:00.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Updated CWE value.  This is an informational change only."
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "category": "product_name",
        "name": "Microsoft ACI Confidential Containers",
        "product": {
          "name": "Microsoft ACI Confidential Containers",
          "product_id": "20672"
        }
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-26122",
      "cwe": {
        "id": "CWE-1188",
        "name": "Initialization of a Resource with an Insecure Default"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency.\nPlease see Toward greater transparency: Unveiling Cloud Service CVEs for more information.",
          "title": "Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "20672"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-26122 Microsoft ACI Confidential Containers Information Disclosure Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26122"
        },
        {
          "category": "self",
          "summary": "CVE-2026-26122 Microsoft ACI Confidential Containers Information Disclosure Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-26122.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 5.7,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "20672"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Information Disclosure"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft ACI Confidential Containers Information Disclosure Vulnerability"
    }
  ]
}

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-2026-26122 (GCVE-0-2026-26122)

GHSA-C993-389P-JQHF

MSRC_CVE-2026-26122

Tags

Sightings

Nomenclature