Mozilla: Use-after-free with IME input (MFSA 2017-16)
Published Jun 11, 2018
8.8
HIGHCVSS 3.0
EPSS 2.00%
Description
A use-after-free vulnerability during specific user interactions with the input method editor (IME) in some languages due to how events are handled. This results in a potentially exploitable crash but would require specific user interaction to trigger. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<54
- Version
-
- Version unspecifiedStatusaffectedConstraints<52.2
- Version
-
- Version unspecifiedStatusaffectedConstraints<52.2
- 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 |
|
Configuration 1
- 8.0
- 9.0
Configuration 2
- 6.0
- 7.0
- 6.0
- 7.0
- 6.0
- 7.0
- 7.3
- 7.4
- 7.3
- 7.4
- 7.5
- 6.0
- 7.0
Configuration 5
- < 52.2.0
No data.
Red Hat Enterprise Linux 6
firefox-0:52.2.0-1.el6_9
Fixed · RHSA-2017:1440
Red Hat Enterprise Linux 6
thunderbird-0:52.2.0-1.el6_9
Fixed · RHSA-2017:1561
Red Hat Enterprise Linux 7
firefox-0:52.2.0-1.el7_3
Fixed · RHSA-2017:1440
Red Hat Enterprise Linux 7
thunderbird-0:52.2.0-1.el7_3
Fixed · RHSA-2017:1561
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | firefox-0:52.2.0-1.el6_9 | Fixed | RHSA-2017:1440 |
| Red Hat Enterprise Linux 6 | thunderbird-0:52.2.0-1.el6_9 | Fixed | RHSA-2017:1561 |
| Red Hat Enterprise Linux 7 | firefox-0:52.2.0-1.el7_3 | Fixed | RHSA-2017:1440 |
| Red Hat Enterprise Linux 7 | thunderbird-0:52.2.0-1.el7_3 | Fixed | RHSA-2017:1561 |
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:H/I:H/A:H
AV:N/AC:M/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
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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.00% (0.02000) | 80.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.04% (0.02043) | 78.58th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.91% (0.00911) | 73.71th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.29% (0.02292) | 74.48th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.93% (0.00929) | 74.48th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.69% (0.00694) | 80.86th | v3 (v2023.03.01) |
| Apr 12, 2024 | 0.68% (0.00684) | 79.75th | v3 (v2023.03.01) |
| Dec 12, 2023 | 0.68% (0.00684) | 77.74th | v3 (v2023.03.01) |
| Nov 2, 2023 | 0.81% (0.00812) | 79.89th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.59% (0.00592) | 75.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.43% (0.00426) | 70.35th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.27% (0.02273) | 50.89th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.27% (0.02273) | 0.00th | v1 |
References (15)
- http://www.securityfocus.com/bid/99057 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038689 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1440 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1561 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-7752 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1359547 x_refsource_CONFIRMIssue TrackingVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1461256 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-7752
- https://www.cve.org/CVERecord?id=CVE-2017-7752
- https://www.debian.org/security/2017/dsa-3881 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.debian.org/security/2017/dsa-3918 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-16/#CVE-2017-7752
- https://www.mozilla.org/security/advisories/mfsa2017-15/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-16/ x_refsource_CONFIRMVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-17/ x_refsource_CONFIRMVendor Advisory
Change history (0)
No recorded changes yet.