Integer overflow in bcmath in Facebook HHVM before 3.15.0 allows attackers to have unspecified impact via unknown vectors, which triggers a buffer overflow.
http://www.openwall.com/lists/oss-security/2016/08/19/1
http://www.openwall.com/lists/oss-security/2016/08/11/1
https://github.com/facebook/hhvm/commit/c00fc9d3003eb06226b58b6a48555f1456ee2475
Source: Mitre, NVD
Published: 2017-02-17
Updated: 2025-04-20
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.00492