CVE-2026-78236CWE-284CWE-285CWE-287CWE-327broken-access-control

CVE-2026-78236

High · published August 26, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
0.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00102 · 0.9th percentile
Weaknesses
CWE-284 · Improper Access Control; CWE-285 · Improper Authorization; CWE-287 · Improper Authentication; CWE-327 · Use of a Broken or Risky Cryptographic Algorithm
Published
2026-08-26T12:16Z
References (2)
https://docs.adminbyrequest.com/security-advisories/abr-mac-26-01.htm · 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-110/ · 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4
EPSS history
Timeline
  • 27 AUG 06:46Z
    EPSS moved — → 0%
    epss
  • 26 AUG 07:20Z
    Insecure PIN derivation mechanism in Admin By Request (ABR)
    cvelistv5