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CVE-2012-1958

31
FAUCET Score

CVE-2012-1958 describes a use-after-free vulnerability in the nsGlobalWindow::PageHidden function affecting Mozilla Firefox, Thunderbird, and SeaMonkey versions. This flaw allows remote attackers to execute arbitrary code due to issues with focused content. With a CVSS score of 9.3, it is considered critical, indicating a network-based attack with medium complexity that can lead to complete compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta1:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta10:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta11:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta12:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.76%
Probability of exploitation in next 30 days
EPSS Percentile
91.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0476 is in the 57th percentile among its peer group of 8,915 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.1 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-0:10.0.6-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:10.0.6-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:10.0.6-2.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:10.0.6-1.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:10.0.6-1.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:10.0.6-1.el6_3
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2012-1958Moderate

Mozilla: use-after-free in nsGlobalWindow::PageHidden (MFSA 2012-48)

Jul 17, 2012

References

lists.opensuse.org / opensuse-security-announce/2012-07/msg00011.html
lists.opensuse.org / opensuse-security-announce/2012-07/msg00012.html
lists.opensuse.org / opensuse-security-announce/2012-07/msg00013.html
lists.opensuse.org / opensuse-security-announce/2012-07/msg00016.html
osvdb.org / 84001
rhn.redhat.com / errata/RHSA-2012-1088.html
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/49965
secunia.com / advisories/49968
secunia.com / advisories/49972
secunia.com / advisories/49977
secunia.com / advisories/49979
secunia.com / advisories/49992
secunia.com / advisories/49993
secunia.com / advisories/49994
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16434
mozilla.org / security/announce/2012/mfsa2012-48.html
Vendor Advisory
securityfocus.com / bid/54574
securitytracker.com / id
securitytracker.com / id
securitytracker.com / id
ubuntu.com / usn/USN-1509-1
ubuntu.com / usn/USN-1509-2
ubuntu.com / usn/USN-1510-1