CVE-2016-9899
Use-after-free while manipulating DOM events and removing audio elements due to errors in the handling of node adoption.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 20.8%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 20.75% probability · 98th percentile
- Public exploits
- 1 in Exploit-DB · first 13 January 2017
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- debian/debian linux · redhat/enterprise linux · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux workstation · mozilla/firefox · mozilla/thunderbird
- Source
- security@mozilla.org
EPSS moved from 16.0% on 21 September 2026 to 20.8% on 27 October 2026, peaking at 21.1% on 22 September 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://rhn.redhat.com/errata/RHSA-2016-2946.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2973.htmlThird Party Advisory
- http://www.securityfocus.com/bid/94885Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037461Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1317409Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/201701-15Third Party Advisory
- https://www.debian.org/security/2017/dsa-3757Third Party Advisory
- https://www.exploit-db.com/exploits/41042/Third Party Advisory, VDB Entry
- https://www.mozilla.org/security/advisories/mfsa2016-94/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2016-95/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2016-96/Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2946.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2973.htmlThird Party Advisory
- http://www.securityfocus.com/bid/94885Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037461Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1317409Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/201701-15Third Party Advisory
- https://www.debian.org/security/2017/dsa-3757Third Party Advisory
- https://www.exploit-db.com/exploits/41042/Third Party Advisory, VDB Entry
- https://www.mozilla.org/security/advisories/mfsa2016-94/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2016-95/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2016-96/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.