CVE-2017-16928: Haystacksoftware Arq

High severity, CVSS 7.8. EPSS: 1% chance of exploitation in the next 30 days.

The arq_updater binary in Arq 5.10 and earlier for Mac allows local users to write to arbitrary files and consequently gain root privileges via a crafted update URL, as demonstrated by file:///tmp/blah/Arq.zip.

Affected products

• Haystacksoftware Arq: up to and including 5.10

Published 2018-01-31. Last modified 2026-06-17.