CVE-2016-6872 Integer overflow in StringUtil::implode in Facebook HHVM before 3.15.0 allows attackers to have unspecified impact via unknown vectors.

CriticalCVSS 9.8 EPSS 2.2%

Published: 2017-02-17 19:00
Updated: 2026-06-17 03:51
Exploit status: No public exploit known

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Description

Integer overflow in StringUtil::implode in Facebook HHVM before 3.15.0 allows attackers to have unspecified impact via unknown vectors.

Affected products

Product	Affected versions	Fixed in
facebook hhvm	<= 3.14.5	No fix listed

References

[oss-security] 20160811 CVE Requests Facebook HHVM mailing-list third-party-advisory
[oss-security] 20160818 Re: CVE Requests Facebook HHVM mailing-list third-party-advisory
github.com patch

CVSS v3.0

9.8 Critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

All scores (2)

v3.0 9.8 · nvd@nist.gov
v2.0 7.5 · nvd@nist.gov

Weakness & likelihood

EPSS (exploitation probability, 30 days): 2.22% (percentile 82.9)
CWE: CWE-190

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

No public exploit references known.