Vulnerability Report

CVE-2014-5386

Title: Facebook Hiphop Virtual Machine Cryptographic Failures

Other

Proof Of Concept

No public PoC currently indexed for CVE-2014-5386.

CWE Category CWE-310

Published Date Dec 28, 2014

Modified Date May 06, 2026

Exploit Status Not Found

Score 5.0 CVSS v2.0

Exploit Probability (EPSS)

0.24%

Vulnerability Summary

CVE-2014-5386: The mcrypt_create_iv function in hphp/runtime/ext/mcrypt/ext_mcrypt.cpp in Facebook HipHop Virtual Machine (HHVM) before 3.3.0 does not seed the random number generator, which makes it easier for remote attackers to defeat cryptographic protection mechanisms by leveraging the use of a single initialization vector.

Impacted Vendors

facebook 1

Reference Links

https://github.com/facebook/hhvm/commit/ab6fdeb84fb090b48606b6f7933028cfe7bf3a5e https://github.com/facebook/hhvm/commit/ab6fdeb84fb090b48606b6f7933028cfe7bf3a5e

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

5.0

Access Vector

N/A

Authentication

N/A

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2014-5386 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

May 06, 2026 MODIFIED

Vulnerability data updated via NVD.

May 06, 2026 MODIFIED

Vulnerability data updated via NVD.

April 12, 2025 MODIFIED

Vulnerability data or affected products updated.

December 28, 2014 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.