CVE-2016-5254
Status: ModifiedCritical (9.8)—
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.
CVSS
- Version: 3.0
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Base score: 9.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 2.95%
- Percentile among all scored CVEs: 87
- Score date: 10/11/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (2)
CWEs
- CWE-416
References
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html
- http://rhn.redhat.com/errata/RHSA-2016-1551.html
- http://www.debian.org/security/2016/dsa-3640
- http://www.mozilla.org/security/announce/2016/mfsa2016-70.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.securityfocus.com/bid/92261
- http://www.securitytracker.com/id/1036508
- http://www.ubuntu.com/usn/USN-3044-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=1266963
- https://security.gentoo.org/glsa/201701-15
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html
- http://rhn.redhat.com/errata/RHSA-2016-1551.html
- http://www.debian.org/security/2016/dsa-3640
- http://www.mozilla.org/security/announce/2016/mfsa2016-70.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.securityfocus.com/bid/92261
- http://www.securitytracker.com/id/1036508
- http://www.ubuntu.com/usn/USN-3044-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=1266963
- https://security.gentoo.org/glsa/201701-15
Raw JSON (NVD)
Show
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