How severe is CVE-2017-16928?

CVE-2017-16928 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-16928 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16928?

CVE-2017-16928 affects Haystacksoftware Arq. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-16928?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-16928 published?

CVE-2017-16928 was published on 2018-01-31 and last updated on 2026-06-17.

CVE-2017-16928

CVE-2017-16928 is a high-severity vulnerability in Haystacksoftware Arq with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Haystacksoftware Arq
Published: 2018-01-31
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2017-16928?: 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.
How severe is CVE-2017-16928?: CVE-2017-16928 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-16928 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16928?: CVE-2017-16928 affects Haystacksoftware Arq. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-16928?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-16928 published?: CVE-2017-16928 was published on 2018-01-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:haystacksoftware:arq:*:*:*:*:*:*:*:*

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