CVE-2015-3996: The default AFSecurityPolicy.validatesDomainName configuration for AFSSLPinningModeNone in the AFNetworking fr

Q: How do I fix CVE-2015-3996?

afnetworking: upgrade to newer than 2.5.2. Exact commands for each OS are on this page.

Q: Is CVE-2015-3996 being exploited?

CVE-2015-3996 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2015-3996 affect?

CVE-2015-3996 affects afnetworking. Severity is medium (CVSS 4.3). 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 t

Q: How urgent is CVE-2015-3996?

Priority 29/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2015-3996 is a medium-severity flaw (CVSS 4.3) affecting afnetworking. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-254
Published	2015-10-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: afnetworking project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-10-27 16:59 UTCPublished CVE record published
2026-06-17 00:26 UTCUpdated Record last modified

afnetworking project afnetworking UPGRADE

Affected: <= 2.5.2

Fixed in: newer than 2.5.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy afnetworking || rpm -q afnetworking || afnetworking --version

2. UPGRADE to newer than 2.5.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade afnetworking

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade afnetworking

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2015-3996?

afnetworking: upgrade to newer than 2.5.2. Exact commands for each OS are on this page.

Is CVE-2015-3996 being exploited?

CVE-2015-3996 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2015-3996 affect?

CVE-2015-3996 affects afnetworking. Severity is medium (CVSS 4.3). 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 t

How urgent is CVE-2015-3996?

Priority 29/100. No elevated risk signals yet.

Software pages

iOS vulnerabilities · ownCloud vulnerabilities

References

← Back to latest CVEs