CVE-2016-1931: mozilla firefox
Vulnerability summary
CVE-2016-1931 is a critical (CVSS 10.0) vulnerability in mozilla firefox. EPSS estimates a 5.72% chance of exploitation in the next 30 days, higher than 93% of scored vulnerabilities.
Severe, CVSS 10 (NVD); no exploitation reported by the 5 checked sources; EPSS 6% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 31-01-2016PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
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 metrics
3 scores · 2 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated10.0CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS trend
Probability
5.72%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
No change 0.00 pp
From 5.72% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Mozilla1 product
- firefox≤ 43.0.4
Ubuntu1 product
- firefox< 44.0+build3-0ubuntu0.14.04.1
3 vendors · 4 products
References
25 links- bugzilla.mozilla.org/show_bug.cgi?id=1206675X Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1231121X Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1209365X Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1229825X Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1207298X Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1234576X Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1186973X Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1209358X Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1209366X Refsource CONFIRM
Show all 25 references
- bugzilla.mozilla.org/show_bug.cgi?id=1222015X Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1180064X Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1209368X Refsource CONFIRM
- bugzilla.mozilla.org/show_bug.cgi?id=1209546X Refsource CONFIRM