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CVE-2016-4640

23
FAUCET Score

CVE-2016-4640 is a memory corruption vulnerability affecting the Login Window in Apple OS X before version 10.11.6. An attacker could exploit this vulnerability via a crafted application to execute arbitrary code in a privileged context, obtain sensitive user information, or cause a denial of service. With a CVSS score of 7.8 (High), this vulnerability requires user interaction (UI:R) and local access (AV:L) for exploitation. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.11.5CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
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
1.33%
Probability of exploitation in next 30 days
EPSS Percentile
68.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0133 is in the 66th percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

lists.apple.com / archives/security-announce/2016/Jul/msg00000.html
Mailing ListVendor Advisory
support.apple.com / HT206903
Vendor Advisory
securityfocus.com / bid/91824
securitytracker.com / id/1036348
zerodayinitiative.com / advisories/ZDI-16-435
Third Party Advisory