Mozilla: Use-after-free when using alt key and toplevel menus (MFSA 2016-70)
Published Aug 5, 2016
9.8
CRITICALCVSS 3.0
EPSS 2.95%
Description
Use-after-free vulnerability in the nsXULPopupManager::KeyDown function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) by leveraging keyboard access to use the Alt key during selection of top-level menu items.
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
Red Hat Enterprise Linux 5
thunderbird
Not affected
Red Hat Enterprise Linux 6
thunderbird
Not affected
Red Hat Enterprise Linux 7
thunderbird
Not affected
| 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 |
| Red Hat Enterprise Linux 5 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 6 | thunderbird | 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: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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.95% (0.02953) | 86.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.98% (0.02977) | 85.46th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.66% (0.00658) | 68.69th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.10% (0.02103) | 73.43th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.66% (0.00658) | 69.36th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.75% (0.01753) | 88.45th | v3 (v2023.03.01) |
| May 28, 2024 | 1.53% (0.01530) | 87.06th | v3 (v2023.03.01) |
| Jan 15, 2024 | 1.19% (0.01186) | 83.55th | v3 (v2023.03.01) |
| Aug 17, 2023 | 0.84% (0.00839) | 79.93th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.86% (0.00856) | 79.71th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.74% (0.03740) | 85.11th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.74% (0.03740) | 83.58th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.74% (0.03740) | 66.74th | 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/mfsa2016-70.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html x_refsource_CONFIRMThird Party Advisory
- 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-2016-5254 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1266963 x_refsource_CONFIRMIssue TrackingPermissions Required
- https://bugzilla.redhat.com/show_bug.cgi?id=1361980 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-5254
- https://security.gentoo.org/glsa/201701-15 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-5254
- https://www.mozilla.org/security/announce/2016/mfsa2016-70.html
Change history (0)
No recorded changes yet.