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Vulnerabilities / CVE-2016-5256

critical

CVE-2016-5256

Mozilla: Memory safety bugs fixed in Firefox 49 (MFSA 2016-85)

Published Modified CWE 119
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, Red Hat. Rated lower by Ubuntu (medium).

Description

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.

Affected packages and fixed versions

SourcePackageFixed in
ubuntu 12.04firefox49.0+build4-0ubuntu0.12.04.1
ubuntu 14.04firefox49.0+build4-0ubuntu0.14.04.1
ubuntu 16.04firefox49.0+build4-0ubuntu0.16.04.1
ubuntu 16.10firefox49.0+build4-0ubuntu2

References

All 17 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.