peter bassill · operator
$ cve CVE-2016-5254 JSON

CVE-2016-5254

9.8
CRITICAL · CVSS 3.0 · EPSS 3% (pctl 87)

In your normal cycle

Critical by CVSS (9.8), but no sign of active exploitation.

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.

Scoring

CVSS9.8 (CRITICAL, v3.0)
VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS2.95% — more likely to be exploited than 87% of all CVEs
WeaknessCWE-416
On CISA KEVno
Public exploitnone known
Published2016-08-05
Last modified2026-06-17

Affected (2)

VendorProduct
mozillafirefox
oraclelinux

References

→ the Explorer  ·  watch your stack  ·  NVD