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Vulnerability details: VCID-emmz-dq8m-sfct
Vulnerability ID VCID-emmz-dq8m-sfct
Aliases CVE-2016-5261
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 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-190 Integer Overflow or Wraparound
System Score Found at
cvssv3 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5261.json
epss 0.00861 https://api.first.org/data/v1/epss?cve=CVE-2016-5261
epss 0.00861 https://api.first.org/data/v1/epss?cve=CVE-2016-5261
epss 0.00861 https://api.first.org/data/v1/epss?cve=CVE-2016-5261
epss 0.00861 https://api.first.org/data/v1/epss?cve=CVE-2016-5261
epss 0.00861 https://api.first.org/data/v1/epss?cve=CVE-2016-5261
epss 0.00861 https://api.first.org/data/v1/epss?cve=CVE-2016-5261
epss 0.00861 https://api.first.org/data/v1/epss?cve=CVE-2016-5261
epss 0.00861 https://api.first.org/data/v1/epss?cve=CVE-2016-5261
epss 0.00861 https://api.first.org/data/v1/epss?cve=CVE-2016-5261
cvssv2 6.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2016-5261
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2016-5261
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2016-75
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2016-86
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-2016-1912.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5261.json
https://api.first.org/data/v1/epss?cve=CVE-2016-5261
https://bugzilla.mozilla.org/show_bug.cgi?id=1287266
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5257
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5270
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5272
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5274
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5276
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5277
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5278
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5280
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5281
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5284
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2016-86/
http://www.debian.org/security/2016/dsa-3674
http://www.mozilla.org/security/announce/2016/mfsa2016-75.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
http://www.securityfocus.com/bid/92260
http://www.securitytracker.com/id/1036508
http://www.ubuntu.com/usn/USN-3044-1
1361986 https://bugzilla.redhat.com/show_bug.cgi?id=1361986
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:*:*:*:*:*:*:*:*
CVE-2016-5261 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5261
CVE-2016-5261 https://nvd.nist.gov/vuln/detail/CVE-2016-5261
GLSA-201701-15 https://security.gentoo.org/glsa/201701-15
mfsa2016-75 https://www.mozilla.org/en-US/security/advisories/mfsa2016-75
mfsa2016-86 https://www.mozilla.org/en-US/security/advisories/mfsa2016-86
RHSA-2016:1912 https://access.redhat.com/errata/RHSA-2016:1912
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-2016-5261.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:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2016-5261
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-2016-5261
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 0.75001
EPSS Score 0.00861
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:10:18.599630+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/201701-15 38.0.0