Mozilla: No warning when opening executable SettingContent-ms files
Published Oct 18, 2018
8.1
HIGHCVSS 3.0
EPSS 4.83%
Description
Windows 10 does not warn users before opening executable files with the SettingContent-ms extension even when they have been downloaded from the internet and have the "Mark of the Web." Without the warning, unsuspecting users unfamiliar with this new file type might run an unwanted executable. This also allows a WebExtension with the limited downloads.open permission to execute arbitrary code without user interaction on Windows 10 systems. *Note: this issue only affects Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60, Thunderbird < 52.9, Firefox ESR < 60.1, Firefox ESR < 52.9, and Firefox < 61.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<61
- Version
-
- Version unspecifiedStatusaffectedConstraints<52.9
- Version unspecifiedStatusaffectedConstraints<60.1
- Version
-
- Version unspecifiedStatusaffectedConstraints<52.9
- Version unspecifiedStatusaffectedConstraints<60
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mozilla | Firefox | n/a |
| |||||||||
| Mozilla | Firefox ESR | n/a |
| |||||||||
| Mozilla | Thunderbird | n/a |
|
- < 61.0
- ≥ 53.0 · < 60.1.0
- < 52.9
- < 52.9
Running on/with
- n/a
No data.
Red Hat Enterprise Linux 6
firefox
Not affected
Red Hat Enterprise Linux 6
thunderbird
Not affected
Red Hat Enterprise Linux 7
firefox
Not affected
Red Hat Enterprise Linux 7
thunderbird
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 6 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 7 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 7 | thunderbird | Not affected | 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.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:N/C:C/I:C/A:C
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 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 4.83% (0.04831) | 91.72th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.83% (0.04831) | 90.82th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.05% (0.02049) | 82.26th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.06% (0.06058) | 84.14th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.05% (0.02049) | 82.66th | v4 (v2025.03.14) |
| Dec 17, 2024 | 12.06% (0.12056) | 95.34th | v3 (v2023.03.01) |
| Dec 12, 2024 | 25.09% (0.25089) | 96.86th | v3 (v2023.03.01) |
| Aug 27, 2024 | 25.82% (0.25820) | 96.78th | v3 (v2023.03.01) |
| Mar 10, 2024 | 32.95% (0.32954) | 96.90th | v3 (v2023.03.01) |
| Oct 12, 2023 | 33.06% (0.33060) | 96.51th | v3 (v2023.03.01) |
| Jul 8, 2023 | 36.73% (0.36730) | 96.62th | v3 (v2023.03.01) |
| May 8, 2023 | 38.76% (0.38760) | 96.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 36.73% (0.36730) | 96.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.81% (0.03806) | 85.56th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.81% (0.03806) | 84.08th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.81% (0.03806) | 67.27th | v2 (v2022.01.01) |
| Feb 3, 2022 | 33.24% (0.33238) | 97.68th | v1 |
| Sep 1, 2021 | 33.24% (0.33238) | 98.74th | v1 |
| Apr 14, 2021 | 33.24% (0.33238) | 0.00th | v1 |
References (15)
- http://www.securityfocus.com/bid/104560 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041193 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-12368 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1468217 x_refsource_CONFIRMIssue TrackingPermissions RequiredVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1595033 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2018-12368
- https://posts.specterops.io/the-tale-of-settingcontent-ms-files-f1ea253e4d39 x_refsource_MISCExploitThird Party Advisory
- https://security.gentoo.org/glsa/201810-01 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-12368
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-15/#CVE-2018-12368
- https://www.mozilla.org/security/advisories/mfsa2018-15/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-16/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-17/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-18/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-19/ x_refsource_CONFIRMVendor Advisory
Change history (0)
No recorded changes yet.