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Fencer Vulns
high 8.8

CVE-2016-2805 json

Unspecified vulnerability in the browser engine in Mozilla Firefox ESR 38.x before 38.8 allows remote attackers to cause a denial of servic…

published 2016-04-30 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3878

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.7%
EPSS 4.7% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

Unspecified vulnerability in the browser engine in Mozilla Firefox ESR 38.x before 38.8 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Patch / fix

  • thunderbird Ubuntu 14.04 LTS 1:38.8.0+build1-0ubuntu0.14.04.1
  • thunderbird Ubuntu 16.04 LTS 1:38.8.0+build1-0ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2016-2805

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • thunderbird RHEL 5 PRODUCTIVITY, RHEL 5 38.8.0-1.el5_11
  • thunderbird RHEL 6 38.8.0-2.el6_8
  • thunderbird RHEL 7 38.8.0-1.el7_2
  • firefox RHEL 5 45.1.0-1.el5_11
  • firefox RHEL 6 45.1.0-1.el6_7
  • firefox RHEL 7 45.1.0-1.el7_2

red hat advisories RHSA-2016:1041RHSA-2016:0695

  • MozillaFirefox SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +5 more 38.8.0esr-40.5
  • mozilla-nss SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +5 more 3.20.2-30.1
  • mozilla-nspr SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +5 more 4.12-26.1
  • MozillaFirefox SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +5 more 38.8.0esr-66.2
  • MozillaFirefox SLES 11 SP2-LTSS 38.8.0esr-40.1

suse advisories SUSE-SU-2016:1374-1SUSE-SU-2016:1342-1SUSE-SU-2016:1258-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-2805 updated cvss 6.8

Mozilla: Miscellaneous memory safety hazards (rv:38.8) (MFSA 2016-39)

  • Red Hat Enterprise Linux (v. 5 server) firefox 45.1.0-1.el5_11 Red Hat Enterprise Linux Client (v. 7) firefox 45.1.0-1.el7_2, thunderbird 38.8.0-1.el7_2 Red Hat Enterprise Linux Client Optional (v. 7) firefox 45.1.0-1.el7_2 Red Hat Enterprise Linux Desktop (v. 5 client) firefox 45.1.0-1.el5_11, thunderbird 38.8.0-1.el5_11 Red Hat Enterprise Linux Desktop (v. 6) firefox 45.1.0-1.el6_7, thunderbird 38.8.0-2.el6_8 Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 45.1.0-1.el6_7
    +1 more products
    Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 45.1.0-1.el6_7
    fixed: vendor fix RHSA-2016:0695
  • Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird 38.8.0-1.el5_11
    fixed: vendor fix RHSA-2016:1041
  • Red Hat Enterprise Linux Server (v. 6) firefox 45.1.0-1.el6_7 Red Hat Enterprise Linux Server (v. 7) firefox 45.1.0-1.el7_2 Red Hat Enterprise Linux Server Optional (v. 6) firefox 45.1.0-1.el6_7, thunderbird 38.8.0-2.el6_8 Red Hat Enterprise Linux Server Optional (v. 7) firefox 45.1.0-1.el7_2, thunderbird 38.8.0-1.el7_2 Red Hat Enterprise Linux Workstation (v. 6) firefox 45.1.0-1.el6_7, thunderbird 38.8.0-2.el6_8 Red Hat Enterprise Linux Workstation (v. 7) firefox 45.1.0-1.el7_2, thunderbird 38.8.0-1.el7_2
    +2 more products
    Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 45.1.0-1.el6_7 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 45.1.0-1.el7_2
    fixed: vendor fix RHSA-2016:0695

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.65% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.