How severe is CVE-2017-8665?

CVE-2017-8665 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-2017-8665 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8665?

CVE-2017-8665 affects Microsoft Xamarin.ios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8665?

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-2017-8665 published?

CVE-2017-8665 was published on 2017-08-15 and last updated on 2026-06-17.

CVE-2017-8665

CVE-2017-8665 is a high-severity vulnerability in Microsoft Xamarin.ios 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: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Microsoft Xamarin.ios
Published: 2017-08-15
Last modified: 2026-06-17

Description

The Xamarin.iOS update component on systems running macOS allows an attacker to run arbitrary code as root, aka "Xamarin.iOS Elevation Of Privilege Vulnerability."

Frequently asked questions

What is CVE-2017-8665?: The Xamarin.iOS update component on systems running macOS allows an attacker to run arbitrary code as root, aka "Xamarin.iOS Elevation Of Privilege Vulnerability."
How severe is CVE-2017-8665?: CVE-2017-8665 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-2017-8665 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8665?: CVE-2017-8665 affects Microsoft Xamarin.ios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8665?: 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-2017-8665 published?: CVE-2017-8665 was published on 2017-08-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:xamarin.ios:*:*:*:*:*:*:*:*

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