CVE-2026-78236 Insecure PIN derivation mechanism in Admin By Request (ABR)
A low-privileged user can escalate to administrator by exploiting an insecure PIN derivation mechanism via XPC masquerading.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78236?
CVE-2026-78236 is a high-severity vulnerability in Admin By Request (ABR), published on 26 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-78236?
How do I fix CVE-2026-78236?
No fix has been published for CVE-2026-78236 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-78236 being exploited?
There is no known exploitation of CVE-2026-78236 in the wild and no public exploit code.
Sources
Also known as GHSA-733c-6w54-grpx.