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Vulnerability record · CVE-2026-78236 · published 26 August 2026

CVE-2026-78236: Improper access control vulnerability

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.

8.8 CVSS 3.1 High EPSS 0.10% · top 99.1% CWE-284 · Improper access controlCWE-285 · Improper authorization Deferred
8.8CVSS 3.1 base score
0.10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
3 Sep 2026Last modified by NVD

Description

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.

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

References

LinkTags
https://docs.adminbyrequest.com/security-advisories/abr-mac-26-01.htm
https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-110/

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-78236), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.