Skip to content
CVE Tracker
Back

CVE-2016-9899

Use-after-free while manipulating DOM events and removing audio elements due to errors in the handling of node adoption. This…

Critical9.8EPSS 20.8%
Published
Updated
Reserved
Assigned by
mozilla

Description

Use-after-free while manipulating DOM events and removing audio elements due to errors in the handling of node adoption. This vulnerability affects Firefox < 50.1, Firefox ESR < 45.6, and Thunderbird < 45.6.

Scores

CVSS scores of CVE-2016-9899, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0Critical9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
20.8% · top 2.5% of all CVEs (2 Nov 2026)

Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

Affected products

  • Mozilla · Firefox

    • affected unspecified – < 50.1

  • Mozilla · Firefox ESR

    • affected unspecified – < 45.6

  • Mozilla · Thunderbird

    • affected unspecified – < 45.6

References (11)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .