{"cve":"CVE-2016-1938","nvd":{"published":"2016-01-31T18:59:05.107","modified":"2026-06-17T00:42:53.860","status":"Modified","description":"The s_mp_div function in lib/freebl/mpi/mpi.c in Mozilla Network Security Services (NSS) before 3.21, as used in Mozilla Firefox before 44.0, improperly divides numbers, which might make it easier for remote attackers to defeat cryptographic protection mechanisms by leveraging use of the (1) mp_div or (2) mp_exptmod function.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":["CWE-310"],"references":["http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00001.html","http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00002.html","http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00010.html","http://www.debian.org/security/2016/dsa-3688","http://www.mozilla.org/security/announce/2016/mfsa2016-07.html"],"products":["mozilla:firefox","mozilla:nss","opensuse:leap","opensuse:opensuse"],"source":"nvd","synced_at":"2026-10-19T20:37:48.328043465+00:00"},"epss":{"cve":"CVE-2016-1938","score":0.0316,"percentile":0.87986,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}