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-2015-0817

19
FAUCET Score

CVE-2015-0817 describes a critical vulnerability in the asm.js implementation of Mozilla Firefox, Firefox ESR, and SeaMonkey. This flaw allows remote attackers to bypass bounds checking during JIT compilation and heap access, leading to unintended memory reads or writes and ultimately arbitrary code execution. With a CVSS score of 6.8, it presents a medium-complexity attack vector (AV:N/AC:M/Au:N) that can result in partial confidentiality, integrity, and availability impacts. While no public exploit intelligence (Metasploit, Nuclei, ExploitDB) is available, the vulnerability was disclosed following Pwn2Own 2015, indicating it was exploitable in the wild at that time.

Impacted Technologies

VendorProductVersion(s)CPE
<= 36.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
31.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:31.0:*:*:*:*:*:*:*
31.1.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:31.1.0:*:*:*:*:*:*:*
31.1.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:31.1.1:*:*:*:*:*:*:*
31.3.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:31.3.0:*:*:*:*:*:*:*

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
3.68%
Probability of exploitation in next 30 days
EPSS Percentile
88.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0368 is in the 84th percentile among its peer group of 19,958 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, 0.0 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

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:31.5.3-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:31.5.3-1.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:31.5.3-3.ael7b_1
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2015-0817Critical

Mozilla: Code execution through incorrect JavaScript bounds checking elimination (MFSA 2015-29)

Mar 21, 2015

References

lists.opensuse.org / opensuse-security-announce/2015-03/msg00026.html
lists.opensuse.org / opensuse-security-announce/2015-03/msg00029.html
lists.opensuse.org / opensuse-security-announce/2015-03/msg00035.html
lists.opensuse.org / opensuse-updates/2015-03/msg00096.html
rhn.redhat.com / errata/RHSA-2015-0718.html
bugzilla.mozilla.org / show_bug.cgi
security.gentoo.org / glsa/201504-01
debian.org / security/2015/dsa-3201
mozilla.org / security/announce/2015/mfsa2015-29.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2015-2511959.html
securityfocus.com / bid/73263
securitytracker.com / id/1031958
ubuntu.com / usn/USN-2538-1