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Vulnerability details: VCID-9mux-fuyc-a7dx
Vulnerability ID VCID-9mux-fuyc-a7dx
Aliases CVE-2016-1938
Summary Multiple vulnerabilities have been found in Firefox, Thunderbird, Network Security Services (NSS), and NetScape Portable Runtime (NSPR) with the worst of which may allow remote execution of arbitrary code.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-682 Incorrect Calculation
CWE-310 Cryptographic Issues
System Score Found at
epss 0.01048 https://api.first.org/data/v1/epss?cve=CVE-2016-1938
epss 0.01048 https://api.first.org/data/v1/epss?cve=CVE-2016-1938
epss 0.01048 https://api.first.org/data/v1/epss?cve=CVE-2016-1938
epss 0.01048 https://api.first.org/data/v1/epss?cve=CVE-2016-1938
epss 0.01048 https://api.first.org/data/v1/epss?cve=CVE-2016-1938
epss 0.01048 https://api.first.org/data/v1/epss?cve=CVE-2016-1938
epss 0.01048 https://api.first.org/data/v1/epss?cve=CVE-2016-1938
epss 0.01048 https://api.first.org/data/v1/epss?cve=CVE-2016-1938
epss 0.01048 https://api.first.org/data/v1/epss?cve=CVE-2016-1938
epss 0.01048 https://api.first.org/data/v1/epss?cve=CVE-2016-1938
cvssv2 6.4 https://nvd.nist.gov/vuln/detail/CVE-2016-1938
cvssv3 6.5 https://nvd.nist.gov/vuln/detail/CVE-2016-1938
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2016-07
Reference id Reference type URL
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
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-1938.json
https://api.first.org/data/v1/epss?cve=CVE-2016-1938
https://blog.fuzzing-project.org/37-Mozilla-NSS-Wrong-calculation-results-in-mp_div-and-mp_exptmod.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1190248
https://bugzilla.mozilla.org/show_bug.cgi?id=1194947
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4000
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7181
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7182
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7575
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1950
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.21_release_notes
https://github.com/hannob/bignum-fuzz/blob/master/CVE-2016-1938-nss-mp_div.c
https://github.com/hannob/bignum-fuzz/blob/master/CVE-2016-1938-nss-mp_exptmod.c
https://hg.mozilla.org/projects/nss/diff/a555bf0fc23a/lib/freebl/mpi/mpi.c
http://www.debian.org/security/2016/dsa-3688
http://www.mozilla.org/security/announce/2016/mfsa2016-07.html
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://www.securityfocus.com/bid/81955
http://www.securityfocus.com/bid/91787
http://www.securitytracker.com/id/1034825
http://www.ubuntu.com/usn/USN-2880-1
http://www.ubuntu.com/usn/USN-2880-2
http://www.ubuntu.com/usn/USN-2903-1
http://www.ubuntu.com/usn/USN-2903-2
http://www.ubuntu.com/usn/USN-2973-1
1305159 https://bugzilla.redhat.com/show_bug.cgi?id=1305159
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:nss:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:nss:*:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
CVE-2016-1938 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1938
CVE-2016-1938 https://nvd.nist.gov/vuln/detail/CVE-2016-1938
GLSA-201605-06 https://security.gentoo.org/glsa/201605-06
GLSA-201701-46 https://security.gentoo.org/glsa/201701-46
mfsa2016-07 https://www.mozilla.org/en-US/security/advisories/mfsa2016-07
USN-2880-1 https://usn.ubuntu.com/2880-1/
USN-2903-1 https://usn.ubuntu.com/2903-1/
USN-2973-1 https://usn.ubuntu.com/2973-1/
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-1938
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-1938
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.77455
EPSS Score 0.01048
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:04:51.094793+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/201605-06 38.0.0