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Vulnerability details: VCID-tz9z-smtv-aaac
Vulnerability ID VCID-tz9z-smtv-aaac
Aliases CVE-2016-5256
Summary Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 49.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-5256.html
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5256.json
epss 0.00755 https://api.first.org/data/v1/epss?cve=CVE-2016-5256
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epss 0.00755 https://api.first.org/data/v1/epss?cve=CVE-2016-5256
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epss 0.03173 https://api.first.org/data/v1/epss?cve=CVE-2016-5256
epss 0.03613 https://api.first.org/data/v1/epss?cve=CVE-2016-5256
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epss 0.04722 https://api.first.org/data/v1/epss?cve=CVE-2016-5256
epss 0.04722 https://api.first.org/data/v1/epss?cve=CVE-2016-5256
epss 0.04722 https://api.first.org/data/v1/epss?cve=CVE-2016-5256
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rhbs urgent https://bugzilla.redhat.com/show_bug.cgi?id=1377666
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5256
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2016-5256
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2016-5256
archlinux Critical https://security.archlinux.org/AVG-24
generic_textual Medium https://ubuntu.com/security/notices/USN-3076-1
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2016-85
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2016-85/
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-5256.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5256.json
https://api.first.org/data/v1/epss?cve=CVE-2016-5256
https://bugzilla.mozilla.org/show_bug.cgi?id=1268034
https://bugzilla.mozilla.org/show_bug.cgi?id=1276413
https://bugzilla.mozilla.org/show_bug.cgi?id=1282746
https://bugzilla.mozilla.org/show_bug.cgi?id=1290244
https://bugzilla.mozilla.org/show_bug.cgi?id=1296078
https://bugzilla.mozilla.org/show_bug.cgi?id=1296087
https://bugzilla.mozilla.org/show_bug.cgi?id=1297099
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5256
https://security.gentoo.org/glsa/201701-15
https://ubuntu.com/security/notices/USN-3076-1
https://www.mozilla.org/en-US/security/advisories/mfsa2016-85/
http://www.mozilla.org/security/announce/2016/mfsa2016-85.html
http://www.securityfocus.com/bid/93052
http://www.securitytracker.com/id/1036852
1377666 https://bugzilla.redhat.com/show_bug.cgi?id=1377666
ASA-201609-22 https://security.archlinux.org/ASA-201609-22
AVG-24 https://security.archlinux.org/AVG-24
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-2016-5256 https://nvd.nist.gov/vuln/detail/CVE-2016-5256
mfsa2016-85 https://www.mozilla.org/en-US/security/advisories/mfsa2016-85
USN-3076-1 https://usn.ubuntu.com/3076-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5256.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:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2016-5256
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:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2016-5256
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 0.70934
EPSS Score 0.00755
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.