What’s Vulnerable › Vulnerabilities

CVE-2014-5386

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2014-12-28 · updated 2026-06-17
• Weakness: CWE-310

Description

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.

Affected products

• Facebook Hiphop Virtual Machine: through 3.2.0

References

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

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