{"id":"CVE-2016-6871","aliases":["EUVD-2016-7756","GHSA-69p6-g3px-hvhw","UBUNTU-CVE-2016-6871"],"status":"published","title":"Integer overflow in bcmath in Facebook HHVM before 3.15.0 allows attackers to have unspecified...","description":"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.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02329,"percentile":0.83636,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-190"],"published":"2017-02-17T17:00:00Z","modified":"2026-11-04T02:45:03Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"hhvm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.11.0+dfsg-1","3.11.1+dfsg-1","3.11.1+dfsg-1ubuntu1"]}],"products":[{"vendor":"facebook","product":"hhvm"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2016/08/11/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Patch","Third Party Advisory","fix"]},{"url":"https://github.com/facebook/hhvm/commit/c00fc9d3003eb06226b58b6a48555f1456ee2475","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix","report"]},{"url":"http://www.openwall.com/lists/oss-security/2016/08/19/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-6871"},{"url":"https://github.com/advisories/GHSA-69p6-g3px-hvhw"},{"url":"https://ubuntu.com/security/CVE-2016-6871","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-6871","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2016-6871","description":"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.","status":"published","published":"2017-02-17T17:00:00Z","modified":"2024-08-06T01:43:38.427Z","updated_at":"2026-11-02T14:33:34.443637Z"}],"euvd":[{"id":"EUVD-2016-7756","description":"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.","status":"published","published":"2017-02-17T17:00:00Z","modified":"2024-08-06T01:43:38Z","updated_at":"2026-11-03T02:22:35.048987Z"}],"ghsa":[{"id":"GHSA-69p6-g3px-hvhw","title":"Integer overflow in bcmath in Facebook HHVM before 3.15.0 allows attackers to have unspecified...","description":"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.","status":"published","published":"2022-05-17T02:58:01Z","modified":"2023-01-27T05:06:35Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:42:56.687968Z"}],"nvd":[{"id":"CVE-2016-6871","description":"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.","status":"published","published":"2017-02-17T17:59:01.013Z","modified":"2026-06-17T00:51:54.56Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:03:35.822579Z"}],"osv":[{"id":"CVE-2016-6871","description":"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.","status":"published","published":"2017-02-17T17:59:01.013Z","modified":"2026-11-04T07:06:50.465090896Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-04T07:32:23.735279Z"},{"id":"UBUNTU-CVE-2016-6871","description":"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.","status":"published","published":"2017-02-17T17:59:00Z","modified":"2026-04-22T10:54:46.463781Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:12.642042Z"}]}}