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Vulnerability details: VCID-2n2a-v1kj-aaan
Vulnerability ID VCID-2n2a-v1kj-aaan
Aliases CVE-2016-5271
Summary The PropertyProvider::GetSpacingInternal function in Mozilla Firefox before 49.0 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via text runs in conjunction with a "display: contents" Cascading Style Sheets (CSS) property.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-125 Out-of-bounds Read
System Score Found at
generic_textual Low http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-5271.html
cvssv3 5.6 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5271.json
epss 0.00647 https://api.first.org/data/v1/epss?cve=CVE-2016-5271
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epss 0.00887 https://api.first.org/data/v1/epss?cve=CVE-2016-5271
epss 0.01826 https://api.first.org/data/v1/epss?cve=CVE-2016-5271
rhbs low https://bugzilla.redhat.com/show_bug.cgi?id=1377661
generic_textual Low https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5271
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2016-5271
cvssv3 6.5 https://nvd.nist.gov/vuln/detail/CVE-2016-5271
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-2016-5271.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5271.json
https://api.first.org/data/v1/epss?cve=CVE-2016-5271
https://bugzilla.mozilla.org/show_bug.cgi?id=1288946
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5271
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
1377661 https://bugzilla.redhat.com/show_bug.cgi?id=1377661
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-2016-5271 https://nvd.nist.gov/vuln/detail/CVE-2016-5271
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:H/PR:N/UI:N/S:U/C:L/I:L/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5271.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:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2016-5271
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:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2016-5271
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 0.68353
EPSS Score 0.00647
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.