HIGH

CVE-2016-9905

Q: Is CVE-2016-9905 actively exploited?

Active exploitation of CVE-2016-9905 has not been confirmed. Its EPSS score was 2.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2016-9905?

CVE-2016-9905 has a CVSS v3 base score of 8.8 (HIGH severity).

CVSS v3

8.8

HIGH

EPSS Score

2.3 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

CVE-2016-9905 Red Hat Product Security273 products fixed
Mozilla: Crash in EnumerateSubDocuments (MFSA 2016-94, MFSA 2016-95)
RHSA-2016:2973 Red Hat Product Security42 products fixed
Red Hat Security Advisory: thunderbird security update
RHSA-2016:2946 Red Hat Product Security77 products fixed
Red Hat Security Advisory: firefox security update

Full record on NVD

Description

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

Technical details

Published: 2018-06-11

Frequently asked questions

What is CVE-2016-9905?

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

Is CVE-2016-9905 actively exploited?

Active exploitation of CVE-2016-9905 has not been confirmed. Its EPSS score was 2.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-9905?

CVE-2016-9905 has a CVSS v3 base score of 8.8 (HIGH severity).

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