CVE-2015-3996

Name: CVE-2015-3996
Creator: NVD / NIST
Published: 2015-10-27T16:59:00.1+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.84%

Last modified Jun 17, 2026

CVE-2015-3996 is a vulnerability of currently unknown severity. The default AFSecurityPolicy.validatesDomainName configuration for AFSSLPinningModeNone in the AFNetworking framework before 2.5.3, as used in the ownCloud iOS Library, disables verification of a server hostname against the domain name in the subject's Common Name (CN) of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.. EPSS estimates a 0.84% chance of exploitation in the next 30 days.

Description

The default AFSecurityPolicy.validatesDomainName configuration for AFSSLPinningModeNone in the AFNetworking framework before 2.5.3, as used in the ownCloud iOS Library, disables verification of a server hostname against the domain name in the subject's Common Name (CN) of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

Metrics

EPSS Probability

0.84%

53.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-254

Affected Software

Vendor	Product	Versions
Afnetworking Project	Afnetworking	<= 2.5.2

References

Timeline

Published: Oct 27, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-3996?

How severe is CVE-2015-3996?

Severity scoring for CVE-2015-3996 is pending analysis. The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.

How do I fix CVE-2015-3996?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-3996?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST