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CVE-2019-8660

50
FAUCET Score

CVE-2019-8660 is a critical memory corruption vulnerability affecting Apple's iOS, macOS, tvOS, and watchOS. It stems from insufficient input validation, allowing a remote attacker to trigger unexpected application termination or achieve arbitrary code execution. With a CVSS score of 9.8 (Critical), this vulnerability requires no user interaction or prior authentication, making it highly severe. While not listed in CISA's KEV catalog, public exploit code exists (EDB-47193) and it has garnered significant community discussion and media coverage, including reports of its use to read files on iPhones.

Impacted Technologies

VendorProductVersion(s)CPE
< 12.4CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 10.14.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
< 12.4CPE matchmatch criteria
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
< 5.3CPE matchmatch criteria
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
13.81%
Probability of exploitation in next 30 days
EPSS Percentile
96.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-47193 · Jul 30, 2019
This CVE's current EPSS score of 0.1381 is in the 92nd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

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

support.apple.com / HT210346
Vendor Advisory
support.apple.com / HT210348
Vendor Advisory
support.apple.com / HT210351
Vendor Advisory
support.apple.com / HT210353
Vendor Advisory