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CVE-2012-1973

34
FAUCET Score

CVE-2012-1973 is a critical use-after-free vulnerability in the nsObjectLoadingContent::LoadObject function affecting Mozilla Firefox, Thunderbird, and SeaMonkey, including their ESR versions. This flaw allows remote attackers to execute arbitrary code or cause a denial of service through heap memory corruption. With a CVSS score of 10.0, it is easily exploitable over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 15.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 10.0, < 10.0.7CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 2.12CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
< 15.0CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
>= 10.0, < 10.0.7CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:*

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
5.57%
Probability of exploitation in next 30 days
EPSS Percentile
92.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0557 is in the 86th 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-2012-1973Critical

Mozilla: Multiple Use-after-free issues (MFSA 2012-58)

Aug 28, 2012

References

lists.opensuse.org / opensuse-security-announce/2012-08/msg00028.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2012-09/msg00011.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2012-09/msg00014.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2012-1210.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2012-1211.html
Third Party Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingVendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17045
Third Party Advisory
debian.org / security/2012/dsa-2553
Third Party Advisory
debian.org / security/2012/dsa-2554
Third Party Advisory
debian.org / security/2012/dsa-2556
Third Party Advisory
mozilla.org / security/announce/2012/mfsa2012-58.html
Vendor Advisory
securityfocus.com / bid/55316
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-1548-1
Third Party Advisory
ubuntu.com / usn/USN-1548-2
Third Party Advisory
xerox.com / download/security/security-bulletin/16287-4d6b7b0c81f7b/cert_XRX13-003_v1.0.pdf
Third Party Advisory