Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-9066

24
FAUCET Score

CVE-2016-9066 describes a buffer overflow vulnerability in Mozilla Firefox (versions < 50), Firefox ESR (versions < 45.5), and Thunderbird (versions < 45.5) that could lead to a potentially exploitable crash when processing large amounts of incoming data. Rated with a CVSS score of 7.5 (HIGH), this vulnerability is network-exploitable with low attack complexity, allowing an unauthenticated attacker to achieve a denial of service. While the vulnerability has a high FAUCET Risk Score of 88/100 and notable community discussion and media coverage, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available.

Impacted Technologies

VendorProductVersion(s)CPE
< 45.5.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 50.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 45.5.0CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
12.42%
Probability of exploitation in next 30 days
EPSS Percentile
95.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1242 is in the 94th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

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

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:45.5.0-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:45.5.0-1.el6_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:45.5.0-1.el7_3
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2016-9066Moderate

Mozilla: Integer overflow leading to a buffer overflow in nsScriptLoadHandler (MFSA 2016-89, MFSA 2016-90)

Nov 16, 2016

References

rhn.redhat.com / errata/RHSA-2016-2780.html
Third Party Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingVendor Advisory
security.gentoo.org / glsa/201701-15
Third Party Advisory
debian.org / security/2016/dsa-3730
Third Party Advisory
mozilla.org / security/advisories/mfsa2016-89
Vendor Advisory
mozilla.org / security/advisories/mfsa2016-90
Vendor Advisory
mozilla.org / security/advisories/mfsa2016-93
Vendor Advisory
securityfocus.com / bid/94336
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037298
Third Party AdvisoryVDB Entry