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CVE-2014-1578

28
FAUCET Score

CVE-2014-1578 is an out-of-bounds write vulnerability in Mozilla Firefox and Thunderbird, specifically in the get_tile function when processing WebM video frames with invalid tile sizes. This flaw could lead to a denial of service or potentially arbitrary code execution. With a CVSS score of 7.5 (High), it is easily exploitable over the network with low attack complexity and no authentication required, potentially impacting confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
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:*:*:*:*:*:*:*
<= 32.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
30.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:30.0:*:*:*:*:*:*:*
31.0CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:31.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.94%
Probability of exploitation in next 30 days
EPSS Percentile
89.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0394 is in the 81st percentile among its peer group of 51,553 CVEs.

Social Chatter

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

No media coverage found for this CVE.

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 (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:31.2.0-3.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:31.2.0-2.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:31.2.0-3.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:31.2.0-3.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:31.2.0-3.el7_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: xulrunner-0:31.2.0-1.el7_0
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2014-1578Critical

Mozilla: Out-of-bounds write with WebM video (MFSA 2014-77)

Oct 14, 2014

References

lists.fedoraproject.org / pipermail/package-announce/2014-November/141796.html
lists.fedoraproject.org / pipermail/package-announce/2014-October/141085.html
lists.opensuse.org / opensuse-security-announce/2015-01/msg00024.html
lists.opensuse.org / opensuse-security-announce/2015-07/msg00031.html
lists.opensuse.org / opensuse-updates/2014-11/msg00000.html
lists.opensuse.org / opensuse-updates/2014-11/msg00001.html
lists.opensuse.org / opensuse-updates/2014-11/msg00002.html
lists.opensuse.org / opensuse-updates/2014-11/msg00003.html
rhn.redhat.com / errata/RHSA-2014-1635.html
rhn.redhat.com / errata/RHSA-2014-1647.html
advisories.mageia.org / MGASA-2014-0421.html
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/61387
secunia.com / advisories/61854
secunia.com / advisories/62021
secunia.com / advisories/62022
secunia.com / advisories/62023
security.gentoo.org / glsa/201504-01
debian.org / security/2014/dsa-3050
debian.org / security/2014/dsa-3061
mozilla.org / security/announce/2014/mfsa2014-77.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2015-2511959.html
securityfocus.com / bid/70428
securitytracker.com / id/1031028
securitytracker.com / id/1031030
ubuntu.com / usn/USN-2372-1
ubuntu.com / usn/USN-2373-1