CVE-2016-5257

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Summary

CVECVE-2016-5257
StatePUBLISHED
Assignermozilla
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-09-22 22:59:02 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionMultiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4 and Thunderbird < 45.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Risk And Classification

Primary CVSS: v3.0 9.8 CRITICAL from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.009090000 probability, percentile 0.758760000 (date 2026-05-06)

Problem Types: CWE-119 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary9.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:L/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Mozilla Firefox 45.1.0 All All All
Application Mozilla Firefox 45.1.1 All All All
Application Mozilla Firefox 45.2.0 All All All
Application Mozilla Firefox 45.3.0 All All All
Application Mozilla Firefox All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Debian -- Security Information -- DSA-3674-1 firefox-esr af854a3a-2127-422b-91ae-364da2661108 www.debian.org
Security vulnerabilities fixed in Firefox 49 — Mozilla af854a3a-2127-422b-91ae-364da2661108 www.mozilla.org Vendor Advisory
Access Denied af854a3a-2127-422b-91ae-364da2661108 bugzilla.mozilla.org Issue Tracking
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com
Security vulnerabilities fixed in Thunderbird 45.4 — Mozilla af854a3a-2127-422b-91ae-364da2661108 www.mozilla.org
Debian -- Security Information -- DSA-3690-1 icedove af854a3a-2127-422b-91ae-364da2661108 www.debian.org
Security vulnerabilities fixed in Firefox ESR 45.4 — Mozilla af854a3a-2127-422b-91ae-364da2661108 www.mozilla.org
Access Denied af854a3a-2127-422b-91ae-364da2661108 bugzilla.mozilla.org Issue Tracking
Access Denied af854a3a-2127-422b-91ae-364da2661108 bugzilla.mozilla.org Issue Tracking
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com
Access Denied af854a3a-2127-422b-91ae-364da2661108 bugzilla.mozilla.org Issue Tracking
Mozilla Firefox Multiple Security Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Access Denied af854a3a-2127-422b-91ae-364da2661108 bugzilla.mozilla.org Issue Tracking
Access Denied af854a3a-2127-422b-91ae-364da2661108 bugzilla.mozilla.org Issue Tracking
Access Denied af854a3a-2127-422b-91ae-364da2661108 bugzilla.mozilla.org Issue Tracking
Access Denied af854a3a-2127-422b-91ae-364da2661108 bugzilla.mozilla.org Issue Tracking
Oracle Linux Bulletin - October 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Mozilla Firefox Multiple Flaws Let Remote Users Execute Arbitrary Code, Bypass Security Restrictions, Determine File Paths, and Obtain Potentially Sensitive Information - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Mozilla Firefox, Thunderbird: Multiple vulnerabilities (GLSA 201701-15) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
Access Denied af854a3a-2127-422b-91ae-364da2661108 bugzilla.mozilla.org Issue Tracking
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 710500 Gentoo Linux Mozilla Firefox, Thunderbird Multiple Vulnerabilities (GLSA 201701-15)
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