Vulnerability-Lookup

GHSA-733C-6W54-GRPX

Vulnerability from github – Published: 2026-09-03 18:31 – Updated: 2026-09-03 18:31

Details

An insecure PIN derivation mechanism in ABR allows a low-privileged user to escalate privileges to administrator by communicating over Cross-Process Communication (XPC) while masquerading as an Apple-signed process.

Severity

8.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-78236"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-26T08:16:46Z",
    "severity": "HIGH"
  },
  "details": "An insecure PIN derivation mechanism in ABR allows a low-privileged user to escalate privileges to administrator by communicating over Cross-Process Communication (XPC) while masquerading as an Apple-signed process.",
  "id": "GHSA-733c-6w54-grpx",
  "modified": "2026-09-03T18:31:29Z",
  "published": "2026-09-03T18:31:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-78236"
    },
    {
      "type": "WEB",
      "url": "https://docs.adminbyrequest.com/security-advisories/abr-mac-26-01.htm"
    },
    {
      "type": "WEB",
      "url": "https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-110"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-78236 (GCVE-0-2026-78236)

Vulnerability from cvelistv5 – Published: 2026-08-26 07:20 – Updated: 2026-08-28 06:41

Title

Insecure PIN derivation mechanism in Admin By Request (ABR)

Summary

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-26 14:01 UTC

CWE

CWE-287 - Improper Authentication
CWE-285 - Improper Authorization
CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
CWE-284 - Improper Access Control

Assigner

CSA mitre root

References

2 references

URL	Tags
https://www.csa.gov.sg/alerts-and-advisories/aler…
https://docs.adminbyrequest.com/security-advisori…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Admin By Request (ABR)	Admin By Request (ABR)	Affected: 5.2.2 and below (macOS)

Credits

GovTech Cybersecurity Group

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-78236",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-26T14:01:23.677810Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-287",
                "description": "CWE-287 Improper Authentication",
                "lang": "en",
                "type": "CWE"
              }
            ]
          },
          {
            "descriptions": [
              {
                "cweId": "CWE-285",
                "description": "CWE-285 Improper Authorization",
                "lang": "en",
                "type": "CWE"
              }
            ]
          },
          {
            "descriptions": [
              {
                "cweId": "CWE-327",
                "description": "CWE-327 Use of a Broken or Risky Cryptographic Algorithm",
                "lang": "en",
                "type": "CWE"
              }
            ]
          },
          {
            "descriptions": [
              {
                "cweId": "CWE-284",
                "description": "CWE-284 Improper Access Control",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-26T14:02:09.555Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Admin By Request (ABR)",
          "vendor": "Admin By Request (ABR)",
          "versions": [
            {
              "status": "affected",
              "version": "5.2.2 and below",
              "versionType": "macOS"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "GovTech Cybersecurity Group"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "An insecure PIN derivation mechanism in ABR allows a low-privileged user to escalate privileges to administrator by communicating over Cross-Process Communication (XPC) while masquerading as an Apple-signed process."
            }
          ],
          "value": "An insecure PIN derivation mechanism in ABR allows a low-privileged user to escalate privileges to administrator by communicating over Cross-Process Communication (XPC) while masquerading as an Apple-signed process."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-28T06:41:41.298Z",
        "orgId": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4",
        "shortName": "CSA"
      },
      "references": [
        {
          "url": "https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-110/"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://docs.adminbyrequest.com/security-advisories/abr-mac-26-01.htm"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Users and administrators of affected product versions are advised to update to the latest version promptly."
            }
          ],
          "value": "Users and administrators of affected product versions are advised to update to the latest version promptly."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Insecure PIN derivation mechanism in Admin By Request (ABR)",
      "x_generator": {
        "engine": "Vulnogram 1.0.5"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4",
    "assignerShortName": "CSA",
    "cveId": "CVE-2026-78236",
    "datePublished": "2026-08-26T07:20:58.647Z",
    "dateReserved": "2026-08-24T03:00:17.827Z",
    "dateUpdated": "2026-08-28T06:41:41.298Z",
    "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.

Action not permitted

GHSA-733C-6W54-GRPX

CVE-2026-78236 (GCVE-0-2026-78236)

Tags

Sightings

Nomenclature