Medium 6.5Published Jan 31, 2016

CVE-2016-1938The 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 fo…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

Does this affect you?

It affects opensuse leap and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stackFree account, 3 products Every CVE for opensuse leap Exploited in the last 30 days

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: 6.5 MEDIUM (v3.0, NVD)CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-310
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

opensuse leap opensuse:leap	42.1	NVD
opensuse opensuse opensuse:opensuse	13.1; 13.2	NVD
mozilla nss mozilla:nss	through 3.20.1	NVD
mozilla firefox mozilla:firefox	through 43.0.4	NVD

References

References

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00001.html	third-party-advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00002.html	third-party-advisory
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	vendor-advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html	third-party-advisory
http://www.securityfocus.com/bid/81955
http://www.securityfocus.com/bid/91787	third-party-advisory, vdb-entry
http://www.securitytracker.com/id/1034825
http://www.ubuntu.com/usn/USN-2880-1
1–10 of 23

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.