MEDIUM
firefox: mixed content warning is not displayed when HTTPS page loads a favicon over HTTP
Published Feb 28, 2019
5.4
MEDIUMCVSS 3.0
EPSS 2.05%
Description
If a site is loaded over a HTTPS connection but loads a favicon resource over HTTP, the mixed content warning is not displayed to users. This vulnerability affects Firefox < 63.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<63
- Version
Configuration 2
OR
- 14.04
- 16.04
- 18.04
- 18.10
No data.
Red Hat Enterprise Linux 5
firefox
Will not fix
Red Hat Enterprise Linux 6
firefox
Will not fix
Red Hat Enterprise Linux 7
firefox
Will not fix
Red Hat Enterprise Linux 8
firefox
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | firefox | Will not fix | n/a |
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.
5.3 MEDIUM NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact Low
Availability Impact None
1 other source (Red Hat) ▾
5.4 MEDIUM Red Hat
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact Low
Integrity Impact Low
Availability Impact None
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.05% 0.02055
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02055
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.05% (0.02055) | 80.57th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.87% (0.01873) | 76.58th | v5 (v2026.06.15) |
| Nov 21, 2025 | 0.53% (0.00533) | 66.49th | v4 (v2025.03.14) |
| Nov 18, 2025 | 2.22% (0.02219) | 83.12th | v4 (v2025.03.14) |
| Aug 20, 2025 | 0.43% (0.00435) | 62.05th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.51% (0.01508) | 79.44th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.49% (0.03490) | 79.07th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.51% (0.01508) | 79.88th | v4 (v2025.03.14) |
| Dec 13, 2024 | 0.25% (0.00246) | 65.20th | v3 (v2023.03.01) |
| Mar 28, 2024 | 0.79% (0.00791) | 81.17th | v3 (v2023.03.01) |
| Feb 22, 2024 | 0.80% (0.00804) | 81.18th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.90% (0.00897) | 80.68th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.62% (0.00624) | 75.64th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.25% (0.01247) | 30.57th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.25% (0.01247) | 0.00th | v1 |
Weaknesses (1)
References (10)
- http://www.securityfocus.com/bid/105721 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041944 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-12403 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1484753 x_refsource_CONFIRMIssue TrackingPermissions RequiredVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1692373 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2018-12403
- https://usn.ubuntu.com/3801-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-12403
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12403
- https://www.mozilla.org/security/advisories/mfsa2018-26/ x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105721 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041944 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2018-12403 | Vendor Advisory | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1484753 | x_refsource_CONFIRMIssue TrackingPermissions RequiredVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1692373 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-12403 | ||
| https://usn.ubuntu.com/3801-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-12403 | ||
| https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12403 | ||
| https://www.mozilla.org/security/advisories/mfsa2018-26/ | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mozilla
Published Feb 28, 2019
Updated Aug 5, 2024
Reserved Jun 14, 2018
Link CVE-2018-12403
CISA Vulnrichment
Updated n/a