CVE-2016-9905

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-06-11 · updated 2026-06-17
Weakness: CWE-284

Description

A potentially exploitable crash in "EnumerateSubDocuments" while adding or removing sub-documents. This vulnerability affects Firefox ESR < 45.6 and Thunderbird < 45.6.

Affected products

Debian Linux: 8.0
Mozilla Firefox: before 45.6.0 — fixed in 45.6.0
Mozilla Thunderbird: before 45.6.0 — fixed in 45.6.0
RedHat Enterprise Linux Desktop: 5.0, 6.0, 7.0
RedHat Enterprise Linux Server: 5.0, 6.0, 7.0
RedHat Enterprise Linux Workstation: 5.0, 6.0, 7.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 45.6.0; Mozilla Thunderbird 45.6.0. Check the vendor advisory for mitigations.

References

http://rhn.redhat.com/errata/RHSA-2016-2946.html
http://rhn.redhat.com/errata/RHSA-2016-2973.html
http://www.securityfocus.com/bid/94884
http://www.securitytracker.com/id/1037462
https://bugzilla.mozilla.org/show_bug.cgi?id=1293985
https://security.gentoo.org/glsa/201701-15
https://www.debian.org/security/2017/dsa-3757
https://www.mozilla.org/security/advisories/mfsa2016-95/
https://www.mozilla.org/security/advisories/mfsa2016-96/
http://rhn.redhat.com/errata/RHSA-2016-2946.html
http://rhn.redhat.com/errata/RHSA-2016-2973.html
http://www.securityfocus.com/bid/94884

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