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CVE-2014-4455

11
FAUCET Score

CVE-2014-4455 is a code-signing bypass vulnerability in Apple's dyld component, affecting iOS before version 8.1.1 and Apple TV before 7.0.2. This flaw allows a local attacker to bypass security restrictions by crafting a malicious Mach-O executable file with overlapping segments. Rated with a CVSS score of 2.1, it has low attack complexity and requires local access, primarily impacting integrity. While no public exploit code or active exploitation has been observed, it received some media coverage and community discussion at the time of its disclosure.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.1.2CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
<= 7.0.1CPE matchmatch criteria
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:apple:tvos:6.0:*:*:*:*:*:*:*
6.0.1CPE matchmatch criteria
cpe:2.3:o:apple:tvos:6.0.1:*:*:*:*:*:*:*
6.0.2CPE matchmatch criteria
cpe:2.3:o:apple:tvos:6.0.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 51st percentile among its peer group of 2,096 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 0.6 GitHub mentions.

Media Mentions

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/2014/Nov/msg00000.html
Vendor Advisory
lists.apple.com / archives/security-announce/2014/Nov/msg00002.html
Vendor Advisory
lists.apple.com / archives/security-announce/2015/Jan/msg00000.html
Vendor Advisory
lists.apple.com / archives/security-announce/2015/Jan/msg00001.html
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/98773
support.apple.com / en-us/HT204418
support.apple.com / en-us/HT204420
support.apple.com / en-us/HT6590
Vendor Advisory
support.apple.com / en-us/HT6592
Vendor Advisory
support.apple.com / HT204245
Vendor Advisory
support.apple.com / HT204246
Vendor Advisory
securityfocus.com / bid/71140
securitytracker.com / id/1031231