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CVE-2016-1864

20
FAUCET Score

CVE-2016-1864 describes a vulnerability in the XSS auditor of WebKit, affecting Apple iOS before version 9.3 and Safari before 9.1. This flaw allows remote attackers to obtain sensitive information due to improper handling of redirects in block mode when a crafted URL is accessed. Rated as Medium severity with a CVSS score of 4.3, it has a low attack complexity and requires no user interaction, potentially leading to a loss of confidentiality. There is no evidence of active exploitation, and no public exploit code or significant community discussion has been identified.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9.0.3CPE matchmatch criteria
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
<= 9.2.1CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.86%
Probability of exploitation in next 30 days
EPSS Percentile
77.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0186 is in the 90th percentile among its peer group of 21,954 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 0.0 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/Mar/msg00000.html
Vendor Advisory
lists.apple.com / archives/security-announce/2016/Mar/msg00005.html
Vendor Advisory
support.apple.com / HT206166
Vendor Advisory
support.apple.com / HT206171
Vendor Advisory
securityfocus.com / bid/91358
securitytracker.com / id/1036344