Mozilla: Favicon network connection persists when page is closed (MFSA 2016-62)
Published Aug 5, 2016
4.3
MEDIUMCVSS 3.0
EPSS 1.46%
Description
Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 preserve the network connection used for favicon resource retrieval after the associated browser window is closed, which makes it easier for remote web servers to track users by observing network traffic from multiple IP addresses.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
firefox-0:45.3.0-1.el5_11
Fixed · RHSA-2016:1551
Red Hat Enterprise Linux 6
firefox-0:45.3.0-1.el6_8
Fixed · RHSA-2016:1551
Red Hat Enterprise Linux 7
firefox-0:45.3.0-1.el7_2
Fixed · RHSA-2016:1551
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox-0:45.3.0-1.el5_11 | Fixed | RHSA-2016:1551 |
| Red Hat Enterprise Linux 6 | firefox-0:45.3.0-1.el6_8 | Fixed | RHSA-2016:1551 |
| Red Hat Enterprise Linux 7 | firefox-0:45.3.0-1.el7_2 | Fixed | RHSA-2016:1551 |
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:R/S:U/C:L/I:N/A:N
AV:N/AC:M/Au:N/C:P/I:N/A:N
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.46% (0.01459) | 72.59th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.47% (0.01471) | 70.29th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.52% (0.00522) | 64.25th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.77% (0.01772) | 71.38th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.52% (0.00522) | 64.94th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.50% (0.00495) | 77.00th | v3 (v2023.03.01) |
| Mar 5, 2024 | 0.50% (0.00495) | 75.66th | v3 (v2023.03.01) |
| Jan 15, 2024 | 0.50% (0.00495) | 73.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.35% (0.00349) | 67.28th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (16)
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2016-1551.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2016/dsa-3640 vendor-advisoryx_refsource_DEBIAN
- http://www.mozilla.org/security/announce/2016/mfsa2016-63.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/92261 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036508 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-3044-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2016-2830 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1255270 x_refsource_CONFIRMIssue TrackingPermissions Required
- https://bugzilla.redhat.com/show_bug.cgi?id=1342897 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-2830
- https://security.gentoo.org/glsa/201701-15 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-2830
- https://www.mozilla.org/security/announce/2016/mfsa2016-63.html
Change history (0)
No recorded changes yet.