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CVE-2016-9905

22
FAUCET Score

CVE-2016-9905 describes a high-severity, potentially exploitable crash in Firefox ESR and Thunderbird versions prior to 45.6, specifically within the "EnumerateSubDocuments" function during sub-document manipulation. This vulnerability carries a CVSS score of 8.8, indicating a high risk of compromise with potential for complete confidentiality, integrity, and availability impact through a low-complexity network attack requiring user interaction. While no public exploit intelligence or active exploitation has been observed, and community discussion is minimal, the vulnerability's high severity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
5.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.40%
Probability of exploitation in next 30 days
EPSS Percentile
82.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0240 is in the 81st percentile among its peer group of 14,848 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

mozillapatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:45.6.0-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:45.6.0-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:45.6.0-1.el6_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:45.6.0-1.el6_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:45.6.0-1.el7_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:45.6.0-1.el7_3
View patch

Vendor Advisories (1)

redhatCVE-2016-9905Moderate

Mozilla: Crash in EnumerateSubDocuments (MFSA 2016-94, MFSA 2016-95)

Dec 14, 2016

References

rhn.redhat.com / errata/RHSA-2016-2946.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2973.html
Third Party Advisory
bugzilla.mozilla.org / show_bug.cgi
ExploitIssue TrackingPatchVendor Advisory
security.gentoo.org / glsa/201701-15
Third Party Advisory
debian.org / security/2017/dsa-3757
Third Party Advisory
mozilla.org / security/advisories/mfsa2016-95
Vendor Advisory
mozilla.org / security/advisories/mfsa2016-96
Vendor Advisory
securityfocus.com / bid/94884
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037462
Third Party AdvisoryVDB Entry