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CVE-2019-8634

27
FAUCET Score

CVE-2019-8634 is an authentication bypass vulnerability in macOS Mojave 10.14.5 and earlier, where improved state management was needed to prevent a user from being unexpectedly logged into another user's account. This flaw carries a high CVSS score of 8.8, indicating a critical impact with high confidentiality, integrity, and availability risks, and can be exploited remotely with low privileges and complexity. Despite its severity, there is no public exploit code available, it is not listed in the KEV catalog, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 10.12.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
< 10.14.5CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
>= 10.13, < 10.13.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
10.12.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.12.6:-:*:*:*:*:*:*
10.12.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.12.6:security_update_2017-001:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.99%
Probability of exploitation in next 30 days
EPSS Percentile
58.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0099 is in the 55th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

support.apple.com / HT210119
Vendor Advisory