CVE-2016-5287

CRITICALNVD 9.8

9.8

A potentially exploitable use-after-free crash during actor destruction with service workers. This issue does not affect releases earlier than Firefox 49. This vulnerability affects Firefox < 49.0.2.

CVSS v3: 9.8
EG Score: —
EPSS: 68.6%
KEV: Not listed

Published

June 11, 2018

Last Modified

November 21, 2024

References (8)

security@mozillahttp://www.securityfocus.com/bid/93811
security@mozillahttp://www.securitytracker.com/id/1037077
security@mozillahttps://bugzilla.mozilla.org/show_bug.cgi?id=1309823
security@mozillahttps://www.mozilla.org/security/advisories/mfsa2016-87/
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/93811
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1037077
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1309823
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2016-87/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-416Use After Free

Data Freshness Timeline

(refreshed 5× in last 7d / 5× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:43 UTCepss_batch

Frequently asked(5)

What is CVE-2016-5287?

CVE-2016-5287 is a critical vulnerability published on June 11, 2018. A potentially exploitable use-after-free crash during actor destruction with service workers. This issue does not affect releases earlier than Firefox 49. This vulnerability affects Firefox < 49.0.2.

When was CVE-2016-5287 disclosed?

CVE-2016-5287 was first published in the National Vulnerability Database on June 11, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2016-5287 actively exploited?

CVE-2016-5287 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 68.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2016-5287?

CVE-2016-5287 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2016-5287?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-5287, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2016-5287

📅 Published

🔄 Last Modified

🔗 References (8)