How severe is CVE-2014-2209?

CVE-2014-2209 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2014-2209 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-2209?

CVE-2014-2209 affects Facebook Hiphop Virtual Machine. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-2209?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-2209 published?

CVE-2014-2209 was published on 2014-12-28 and last updated on 2026-06-17.

CVE-2014-2209

CVE-2014-2209 is a medium-severity vulnerability in Facebook Hiphop Virtual Machine with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Facebook Hiphop Virtual Machine
Published: 2014-12-28
Last modified: 2026-06-17

Description

Facebook HipHop Virtual Machine (HHVM) before 3.1.0 does not drop supplemental group memberships within hphp/util/capability.cpp and hphp/util/light-process.cpp, which allows remote attackers to bypass intended access restrictions by leveraging group permissions for a file or directory.

Frequently asked questions

What is CVE-2014-2209?: Facebook HipHop Virtual Machine (HHVM) before 3.1.0 does not drop supplemental group memberships within hphp/util/capability.cpp and hphp/util/light-process.cpp, which allows remote attackers to bypass intended access restrictions by leveraging group permissions for a file or directory.
How severe is CVE-2014-2209?: CVE-2014-2209 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2014-2209 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-2209?: CVE-2014-2209 affects Facebook Hiphop Virtual Machine. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2014-2209?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-2209 published?: CVE-2014-2209 was published on 2014-12-28 and last updated on 2026-06-17.

References

https://github.com/facebook/hhvm/commit/851fff90a9b7461df2393af32239ba217bc25946

Affected products (1)

cpe:2.3:a:facebook:hiphop_virtual_machine:*:*:*:*:*:*:*:*

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