CVE-2016-1931

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 6%CVSS: 10.0Exploit: None knownExposed: 0

A fix is available — apply it.

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 44.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to uninitialized memory encountered during brotli data compression, and other vectors.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation6% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
6%
EPSS %ILE
92%
KEV
Not listed

Published

January 31, 2016

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Aug 19, 2026
No patch confirmed yet.
generic

1206675 - Assertion failure: isObject(), at ../../dist/include/js/Value.h:1237

https://bugzilla.mozilla.org/show_bug.cgi?id=1206675
generic

1186973 - Crash [@ strlen] with evaluate and bytecache

https://bugzilla.mozilla.org/show_bug.cgi?id=1186973
generic

1180064 - Crash [@ PodAssign<js::jit::Pool>] with OOM

https://bugzilla.mozilla.org/show_bug.cgi?id=1180064
generic
http://www.securitytracker.com/id/1034825
generic

CVE-2016-1930 - PSIRT.COM

http://www.securityfocus.com/bid/81953

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntufirefox (44.0+build3-0ubuntu0.15.10.1) @ wily2026-05-20ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 135 total refreshes for this CVE.

  1. 2026-08-19 16:59 UTCEPSS rescore
  2. 2026-08-18 13:43 UTCEPSS rescore
  3. 2026-08-17 13:42 UTCEPSS rescore
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  73. 2026-05-31 00:14 UTCEPSS rescore
  74. 2026-05-29 13:41 UTCEPSS rescore
  75. 2026-05-28 13:42 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2016-1931?
CVE-2016-1931 is a critical vulnerability published on January 31, 2016. Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 44.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to uninitialized memory encountered during brotli data…
When was CVE-2016-1931 disclosed?
CVE-2016-1931 was first published in the National Vulnerability Database on January 31, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-1931 actively exploited?
CVE-2016-1931 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6% probability of exploitation in the next 30 days, which ranks it in the top 7.6% of all scored CVEs.
What is the CVSS score of CVE-2016-1931?
CVE-2016-1931 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2016-1931?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-1931, 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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