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CVE-2015-7189

19
FAUCET Score

CVE-2015-7189 describes a race condition in the JPEGEncoder function of Mozilla Firefox versions prior to 42.0 and Firefox ESR 38.x before 38.4. This vulnerability allows remote attackers to achieve arbitrary code execution or a denial of service via a heap-based buffer overflow, triggered by specially crafted JavaScript code interacting with a CANVAS element. Rated with a CVSS score of 6.8 (Medium), it requires medium attack complexity but can lead to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
38.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:38.0:*:*:*:*:*:*:*
38.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:38.0.1:*:*:*:*:*:*:*
38.0.5CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:38.0.5:*:*:*:*:*:*:*
38.1.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:38.1.0:*:*:*:*:*:*:*
38.1.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:38.1.1:*:*:*:*:*:*:*

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
3.11%
Probability of exploitation in next 30 days
EPSS Percentile
86.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0311 is in the 80th percentile among its peer group of 19,956 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

No media coverage found for this CVE.

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 (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:38.4.0-1.el6_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:38.4.0-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:38.4.0-1.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:38.4.0-1.el7_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:38.4.0-1.el6_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:38.4.0-1.el7_1
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2015-7189Moderate

Mozilla: Buffer overflow during image interactions in canvas (MFSA 2015-123)

Nov 4, 2015

References

lists.opensuse.org / opensuse-security-announce/2015-11/msg00013.html
lists.opensuse.org / opensuse-security-announce/2015-11/msg00015.html
lists.opensuse.org / opensuse-security-announce/2015-11/msg00020.html
lists.opensuse.org / opensuse-security-announce/2015-11/msg00021.html
lists.opensuse.org / opensuse-security-announce/2015-11/msg00025.html
lists.opensuse.org / opensuse-updates/2015-12/msg00037.html
lists.opensuse.org / opensuse-updates/2015-12/msg00049.html
rhn.redhat.com / errata/RHSA-2015-1982.html
rhn.redhat.com / errata/RHSA-2015-2519.html
bugzilla.mozilla.org / show_bug.cgi
security.gentoo.org / glsa/201512-10
debian.org / security/2015/dsa-3393
debian.org / security/2015/dsa-3410
mozilla.org / security/announce/2015/mfsa2015-123.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/77411
securitytracker.com / id/1034069
ubuntu.com / usn/USN-2785-1
ubuntu.com / usn/USN-2819-1