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-2012-3970

33
FAUCET Score

CVE-2012-3970 is a critical use-after-free vulnerability in the nsTArray_base::Length function affecting Mozilla Firefox, Firefox ESR, Thunderbird, Thunderbird ESR, and SeaMonkey. This flaw allows remote attackers to execute arbitrary code or cause a denial of service through heap memory corruption by manipulating the requiredFeatures attribute between SVG documents. With a CVSS score of 10.0, it presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, its high FAUCET Risk Score of 84/100 indicates a substantial potential threat.

Impacted Technologies

VendorProductVersion(s)CPE
10.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:10.0:*:*:*:*:*:*:*
10.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:10.0.1:*:*:*:*:*:*:*
10.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:10.0.2:*:*:*:*:*:*:*
10.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:10.0.3:*:*:*:*:*:*:*
10.0.4CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:10.0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
5.19%
Probability of exploitation in next 30 days
EPSS Percentile
91.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0519 is in the 85th percentile among its peer group of 51,485 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: thunderbird-0:10.0.7-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:10.0.7-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:10.0.7-2.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:10.0.7-1.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:10.0.7-1.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:10.0.7-1.el6_3
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2012-3970Critical

Mozilla: SVG buffer overflow and use-after-free issues (MFSA 2012-63)

Aug 28, 2012

References

lists.opensuse.org / opensuse-security-announce/2012-08/msg00028.html
lists.opensuse.org / opensuse-security-announce/2012-09/msg00011.html
lists.opensuse.org / opensuse-security-announce/2012-09/msg00014.html
rhn.redhat.com / errata/RHSA-2012-1210.html
rhn.redhat.com / errata/RHSA-2012-1211.html
bugzilla.mozilla.org / show_bug.cgi
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16876
mozilla.org / security/announce/2012/mfsa2012-63.html
Vendor Advisory
securityfocus.com / bid/55278
ubuntu.com / usn/USN-1548-1
ubuntu.com / usn/USN-1548-2
xerox.com / download/security/security-bulletin/16287-4d6b7b0c81f7b/cert_XRX13-003_v1.0.pdf