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CVE-2015-1091

14
FAUCET Score

CVE-2015-1091 is a vulnerability in the CFNetwork Session component of Apple iOS before 8.3 and OS X before 10.10.3. It allows remote attackers to bypass the Same Origin Policy through a crafted website due to improper handling of request headers during HTTP redirect processing. The vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and potential for partial confidentiality impact, but no integrity or availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.10.2CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
<= 8.2CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.59%
Probability of exploitation in next 30 days
EPSS Percentile
73.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0159 is in the 48th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 0.0 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/2015/Apr/msg00001.html
Vendor Advisory
lists.apple.com / archives/security-announce/2015/Apr/msg00002.html
Vendor Advisory
support.apple.com / HT204659
Vendor Advisory
support.apple.com / HT204661
Vendor Advisory
securityfocus.com / bid/73984
securitytracker.com / id/1032048