Vulnerability-Lookup

CNVD-2026-20427

Vulnerability from cnvd - Published: 2026-05-18

Title

Apple macOS权限提升漏洞（CNVD-2026-20427）

Description

Apple macOS是苹果公司开发的桌面操作系统。 Apple macOS存在权限提升漏洞。该漏洞源于未能正确验证信息泄露问题，攻击者可利用该漏洞通过应用程序获取root权限。

Severity

高

Patch Name

Apple macOS权限提升漏洞（CNVD-2026-20427）的补丁

Patch Description

Apple macOS是苹果公司开发的桌面操作系统。 Apple macOS存在权限提升漏洞。该漏洞源于未能正确验证信息泄露问题，攻击者可利用该漏洞通过应用程序获取root权限。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://support.apple.com/en-us/127115

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-28976

Impacted products

Name
Apple macOS Tahoe <26.5

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-28976",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-28976"
    }
  },
  "description": "Apple macOS\u662f\u82f9\u679c\u516c\u53f8\u5f00\u53d1\u7684\u684c\u9762\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nApple macOS\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u4fe1\u606f\u6cc4\u9732\u95ee\u9898\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u5e94\u7528\u7a0b\u5e8f\u83b7\u53d6root\u6743\u9650\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://support.apple.com/en-us/127115",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-20427",
  "openTime": "2026-05-18",
  "patchDescription": "Apple macOS\u662f\u82f9\u679c\u516c\u53f8\u5f00\u53d1\u7684\u684c\u9762\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nApple macOS\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u4fe1\u606f\u6cc4\u9732\u95ee\u9898\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u5e94\u7528\u7a0b\u5e8f\u83b7\u53d6root\u6743\u9650\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Apple macOS\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2026-20427\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Apple macOS Tahoe \u003c26.5"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-28976",
  "serverity": "\u9ad8",
  "submitTime": "2026-05-12",
  "title": "Apple macOS\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2026-20427\uff09"
}

CVE-2026-28976 (GCVE-0-2026-28976)

Vulnerability from cvelistv5 – Published: 2026-05-11 20:08 – Updated: 2026-05-12 18:22

Summary

An information leakage was addressed with additional validation. This issue is fixed in macOS Tahoe 26.5. An app may be able to gain root privileges.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-12 18:21 UTC

CWE

An app may be able to gain root privileges
CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
CWE-269 - Improper Privilege Management

Assigner

apple mitre root

References

1 reference

URL	Tags
https://support.apple.com/en-us/127115

Impacted products

1 product

Vendor	Product	Version
Apple	macOS	Affected: 0 , < 26.5 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-28976",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-12T18:21:11.457385Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-200",
                "description": "CWE-200 Exposure of Sensitive Information to an Unauthorized Actor",
                "lang": "en",
                "type": "CWE"
              }
            ]
          },
          {
            "descriptions": [
              {
                "cweId": "CWE-269",
                "description": "CWE-269 Improper Privilege Management",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-12T18:22:39.147Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "26.5",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An information leakage was addressed with additional validation. This issue is fixed in macOS Tahoe 26.5. An app may be able to gain root privileges."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "An app may be able to gain root privileges",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:08:52.759Z",
        "orgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
        "shortName": "apple"
      },
      "references": [
        {
          "url": "https://support.apple.com/en-us/127115"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
    "assignerShortName": "apple",
    "cveId": "CVE-2026-28976",
    "datePublished": "2026-05-11T20:08:52.759Z",
    "dateReserved": "2026-03-03T16:36:03.993Z",
    "dateUpdated": "2026-05-12T18:22:39.147Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.