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-2015-4510

23
FAUCET Score

CVE-2015-4510 describes a race condition in Mozilla Firefox versions prior to 41.0, specifically within the WorkerPrivate::NotifyFeatures function. This vulnerability allows remote attackers to achieve arbitrary code execution or a denial of service (use-after-free and application crash) due to improper interaction between shared workers and the IndexedDB implementation. With a CVSS score of 6.8, it is considered a medium-severity vulnerability, requiring moderate attack complexity and potentially leading to partial confidentiality, integrity, and availability impacts. While it garnered some community discussion and media coverage upon disclosure, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available.

Impacted Technologies

VendorProductVersion(s)CPE
<= 40.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.02%
Probability of exploitation in next 30 days
EPSS Percentile
86.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0302 is in the 79th percentile among its peer group of 19,958 CVEs.

Social Chatter

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

Media Mentions

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

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2015-4510Critical

Mozilla: Use-after-free with shared workers and IndexedDB (MFSA 2015-104)

Sep 22, 2015

References

lists.opensuse.org / opensuse-security-announce/2015-10/msg00000.html
lists.opensuse.org / opensuse-security-announce/2015-10/msg00005.html
bugzilla.mozilla.org / show_bug.cgi
mozilla.org / security/announce/2015/mfsa2015-104.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/76815
securitytracker.com / id/1033640
ubuntu.com / usn/USN-2743-1
ubuntu.com / usn/USN-2743-2
ubuntu.com / usn/USN-2743-3
ubuntu.com / usn/USN-2743-4