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CVE-2019-8771

21
FAUCET Score

CVE-2019-8771 describes a vulnerability in Apple Safari and iOS where maliciously crafted web content could bypass iframe sandboxing policies. This medium-severity vulnerability (CVSS 6.1) requires user interaction (UI:R) and network access (AV:N), potentially leading to limited confidentiality and integrity impacts (C:L, I:L). While no active exploitation, public exploit code, or significant community discussion has been observed, Apple addressed this issue with improved iframe sandbox enforcement in Safari 13.0.1 and iOS 13.

Impacted Technologies

VendorProductVersion(s)CPE
< 13.0.1CPE matchmatch criteria
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
< 13.0.CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.00%
Probability of exploitation in next 30 days
EPSS Percentile
59.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0100 is in the 71st percentile among its peer group of 26,234 CVEs.

Social Chatter

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

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: webkitgtk4-0:2.28.2-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: webkit2gtk3-0:2.28.4-1.el8
View patch
applevendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: webkitgtk3

Vendor Advisories (1)

redhatCVE-2019-8771Moderate

webkitgtk: Violation of iframe sandboxing policy

Oct 29, 2019

References

support.apple.com / en-us/HT210605
Vendor Advisory
support.apple.com / en-us/HT210606
Vendor Advisory