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Vulnerability details: VCID-935y-sfuq-qqgh
Vulnerability ID VCID-935y-sfuq-qqgh
Aliases CVE-2016-5263
Summary Multiple vulnerabilities have been found in Mozilla Firefox and Thunderbird the worst of which could lead to the execution of arbitrary code.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-704 Incorrect Type Conversion or Cast
System Score Found at
cvssv3 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5263.json
epss 0.00678 https://api.first.org/data/v1/epss?cve=CVE-2016-5263
epss 0.00678 https://api.first.org/data/v1/epss?cve=CVE-2016-5263
epss 0.00678 https://api.first.org/data/v1/epss?cve=CVE-2016-5263
epss 0.00678 https://api.first.org/data/v1/epss?cve=CVE-2016-5263
epss 0.00678 https://api.first.org/data/v1/epss?cve=CVE-2016-5263
epss 0.00678 https://api.first.org/data/v1/epss?cve=CVE-2016-5263
epss 0.00678 https://api.first.org/data/v1/epss?cve=CVE-2016-5263
epss 0.00678 https://api.first.org/data/v1/epss?cve=CVE-2016-5263
epss 0.00678 https://api.first.org/data/v1/epss?cve=CVE-2016-5263
cvssv2 6.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2016-5263
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2016-5263
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2016-78
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html
http://rhn.redhat.com/errata/RHSA-2016-1551.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5263.json
https://api.first.org/data/v1/epss?cve=CVE-2016-5263
https://bugzilla.mozilla.org/show_bug.cgi?id=1276897
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
http://www.debian.org/security/2016/dsa-3640
http://www.mozilla.org/security/announce/2016/mfsa2016-78.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://www.securityfocus.com/bid/92258
http://www.securitytracker.com/id/1036508
http://www.ubuntu.com/usn/USN-3044-1
1361991 https://bugzilla.redhat.com/show_bug.cgi?id=1361991
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:firefox:45.1.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:45.1.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:45.1.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:45.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:45.2.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:45.2.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:45.3.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:45.3.0:*:*:*:*:*:*:*
cpe:2.3:o:oracle:linux:5.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:oracle:linux:5.0:*:*:*:*:*:*:*
cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*
cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:*
CVE-2016-5263 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5263
CVE-2016-5263 https://nvd.nist.gov/vuln/detail/CVE-2016-5263
GLSA-201701-15 https://security.gentoo.org/glsa/201701-15
mfsa2016-78 https://www.mozilla.org/en-US/security/advisories/mfsa2016-78
RHSA-2016:1551 https://access.redhat.com/errata/RHSA-2016:1551
USN-3044-1 https://usn.ubuntu.com/3044-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5263.json
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
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2016-5263
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:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2016-5263
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 0.71481
EPSS Score 0.00678
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:10:18.685009+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/201701-15 38.0.0