How severe is CVE-2014-6228?

CVE-2014-6228 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2014-6228 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-6228?

CVE-2014-6228 affects Facebook Hiphop Virtual Machine. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-6228?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2014-6228 published?

CVE-2014-6228 was published on 2014-12-28 and last updated on 2026-06-17.

CVE-2014-6228

CVE-2014-6228 is a high-severity vulnerability in Facebook Hiphop Virtual Machine with a CVSS 2.0 base score of 7.5. 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-189.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Facebook Hiphop Virtual Machine
Published: 2014-12-28
Last modified: 2026-06-17

Description

Integer overflow in the string_chunk_split function in hphp/runtime/base/zend-string.cpp in Facebook HipHop Virtual Machine (HHVM) before 3.3.0 allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via crafted arguments to the chunk_split function.

Frequently asked questions

What is CVE-2014-6228?: Integer overflow in the string_chunk_split function in hphp/runtime/base/zend-string.cpp in Facebook HipHop Virtual Machine (HHVM) before 3.3.0 allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via crafted arguments to the chunk_split function.
How severe is CVE-2014-6228?: CVE-2014-6228 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2014-6228 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-6228?: CVE-2014-6228 affects Facebook Hiphop Virtual Machine. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2014-6228?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2014-6228 published?: CVE-2014-6228 was published on 2014-12-28 and last updated on 2026-06-17.

References

https://github.com/facebook/hhvm/commit/1f91e076a585118495b976a413c1df40f6fd3d41

Affected products (1)

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

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CVE-2015-6575 — Critical (CVSS 10.0): SampleTable.cpp in libstagefright in Android before 5.1.1 LMY48I does not properly consider integer promotion, which…
CVE-2015-3864 — Critical (CVSS 10.0): Integer underflow in the MPEG4Extractor::parseChunk function in MPEG4Extractor.cpp in libstagefright in mediaserver in…
CVE-2015-3836 — Critical (CVSS 10.0): The Parse_wave function in arm-wt-22k/lib_src/eas_mdls.c in the Sonivox DLS-to-EAS converter in Android before 5.1.1…
CVE-2015-3834 — Critical (CVSS 10.0): Multiple integer overflows in the BnHDCP::onTransact function in media/libmedia/IHDCP.cpp in libstagefright in Android…

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