Mozilla: Memory safety bugs fixed in Firefox ESR 45.4 (MFSA 2016-85, MFSA 2016-86)
Published Sep 22, 2016
9.8
CRITICALCVSS 3.0
EPSS 4.24%
Description
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4 and Thunderbird < 45.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
firefox-0:45.4.0-1.el5_11
Fixed · RHSA-2016:1912
Red Hat Enterprise Linux 5
thunderbird-0:45.4.0-1.el5_11
Fixed · RHSA-2016:1985
Red Hat Enterprise Linux 6
firefox-0:45.4.0-1.el6_8
Fixed · RHSA-2016:1912
Red Hat Enterprise Linux 6
thunderbird-0:45.4.0-1.el6_8
Fixed · RHSA-2016:1985
Red Hat Enterprise Linux 7
firefox-0:45.4.0-1.el7_2
Fixed · RHSA-2016:1912
Red Hat Enterprise Linux 7
thunderbird-0:45.4.0-1.el7_2
Fixed · RHSA-2016:1985
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox-0:45.4.0-1.el5_11 | Fixed | RHSA-2016:1912 |
| Red Hat Enterprise Linux 5 | thunderbird-0:45.4.0-1.el5_11 | Fixed | RHSA-2016:1985 |
| Red Hat Enterprise Linux 6 | firefox-0:45.4.0-1.el6_8 | Fixed | RHSA-2016:1912 |
| Red Hat Enterprise Linux 6 | thunderbird-0:45.4.0-1.el6_8 | Fixed | RHSA-2016:1985 |
| Red Hat Enterprise Linux 7 | firefox-0:45.4.0-1.el7_2 | Fixed | RHSA-2016:1912 |
| Red Hat Enterprise Linux 7 | thunderbird-0:45.4.0-1.el7_2 | Fixed | RHSA-2016:1985 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.24% (0.04243) | 90.72th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.16% (0.04162) | 89.54th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.82% (0.00817) | 72.12th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.91% (0.02906) | 77.26th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.82% (0.00817) | 72.65th | v4 (v2025.03.14) |
| Jan 26, 2025 | 4.21% (0.04207) | 92.21th | v3 (v2023.03.01) |
| Dec 17, 2024 | 5.37% (0.05367) | 93.01th | v3 (v2023.03.01) |
| Dec 12, 2024 | 4.14% (0.04142) | 92.50th | v3 (v2023.03.01) |
| Dec 24, 2023 | 4.05% (0.04051) | 91.21th | v3 (v2023.03.01) |
| Nov 15, 2023 | 3.54% (0.03543) | 90.57th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.14% (0.03138) | 89.56th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.31% (0.07312) | 92.53th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.31% (0.07312) | 91.80th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.31% (0.07312) | 80.56th | v2 (v2022.01.01) |
References (25)
- http://rhn.redhat.com/errata/RHSA-2016-1912.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2016-1985.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2016/dsa-3674 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2016/dsa-3690 vendor-advisoryx_refsource_DEBIAN
- http://www.mozilla.org/security/announce/2016/mfsa2016-85.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/93049 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036852 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2016-5257 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1277213 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.mozilla.org/show_bug.cgi?id=1287204 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.mozilla.org/show_bug.cgi?id=1288555 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.mozilla.org/show_bug.cgi?id=1288588 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.mozilla.org/show_bug.cgi?id=1288780 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.mozilla.org/show_bug.cgi?id=1289280 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.mozilla.org/show_bug.cgi?id=1293347 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.mozilla.org/show_bug.cgi?id=1294095 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.mozilla.org/show_bug.cgi?id=1294407 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1377543 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-5257
- https://security.gentoo.org/glsa/201701-15 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-5257
- https://www.mozilla.org/security/advisories/mfsa2016-85/
- https://www.mozilla.org/security/advisories/mfsa2016-86/ x_refsource_CONFIRM
- https://www.mozilla.org/security/advisories/mfsa2016-88/ x_refsource_CONFIRM
Change history (0)
No recorded changes yet.