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CVE-2017-8665

36
FAUCET Score

CVE-2017-8665 is an elevation of privilege vulnerability in the Xamarin.iOS update component on macOS, affecting both Apple and Microsoft Xamarin.iOS installations. With a CVSS score of 7.8 (HIGH), it allows a local attacker to execute arbitrary code as root with low attack complexity, leading to high impact on confidentiality, integrity, and availability. While not on the KEV catalog or Hot List, an exploit (EDB-42454) exists for Xamarin Studio for Mac, though there is minimal community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.11CPE matchmatch criteria
cpe:2.3:a:microsoft:xamarin.ios:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.35%
Probability of exploitation in next 30 days
EPSS Percentile
90.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-42454 · Aug 14, 2017
This CVE's current EPSS score of 0.0435 is in the 98th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Xamarin.iOS
View patch

Vendor Advisories (1)

microsoft2017-Aug/CVE-2017-8665Important

Xamarin.iOS Elevation Of Privilege Vulnerability

Aug 8, 2017

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2017-8665
PatchRelease NotesVendor Advisory
exploit-db.com / exploits/42454
Third Party AdvisoryVDB Entry
securityfocus.com / bid/100308
Third Party AdvisoryVDB Entry