Skip to content
Fencer Intel
critical 9.3

CVE-2012-1938 json

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 13.0, Thunderbird before 13.0, and SeaMonkey before 2.…

published 2012-06-05 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-1947

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.8%
EPSS 4.8% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 13.0, Thunderbird before 13.0, and SeaMonkey before 2.10 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to (1) methodjit/ImmutableSync.cpp, (2) the JSObject::makeDenseArraySlow function in js/src/jsarray.cpp, and unknown other components.

Patch / fix

  • mozilla firefox 13.0
  • mozilla seamonkey 2.10
  • mozilla thunderbird 13.0
  • thunderbird RHEL 5 PRODUCTIVITY, RHEL 5 10.0.5-2.el5_8
  • thunderbird RHEL 6 10.0.5-2.el6_2
  • firefox RHEL 5 10.0.5-1.el5_8
  • firefox RHEL 6 10.0.5-1.el6_2
  • xulrunner RHEL 5 10.0.5-1.el5_8
  • xulrunner RHEL 6 10.0.5-1.el6_2

red hat advisories RHSA-2012:0715RHSA-2012:0710

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 50.1.0-1.1
  • MozillaThunderbird openSUSE Tumbleweed 45.5.1-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10071-1openSUSE-SU-2024:10230-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-1938 updated cvss 6.8

Mozilla: Miscellaneous memory safety hazards (rv:13.0/ rv:10.0.5) (MFSA 2012-34)

  • Red Hat Enterprise Linux (v. 5 server) firefox 10.0.5-1.el5_8, xulrunner 10.0.5-1.el5_8 Red Hat Enterprise Linux Desktop (v. 5 client) firefox 10.0.5-1.el5_8, xulrunner 10.0.5-1.el5_8, thunderbird 10.0.5-2.el5_8 Red Hat Enterprise Linux Desktop (v. 6) firefox 10.0.5-1.el6_2, xulrunner 10.0.5-1.el6_2, thunderbird 10.0.5-2.el6_2 Red Hat Enterprise Linux Desktop Optional (v. 6) xulrunner 10.0.5-1.el6_2 Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 10.0.5-1.el6_2, xulrunner 10.0.5-1.el6_2 Red Hat Enterprise Linux Server (v. 6) firefox 10.0.5-1.el6_2, xulrunner 10.0.5-1.el6_2
    +4 more products
    Red Hat Enterprise Linux Server Optional (v. 6) xulrunner 10.0.5-1.el6_2, thunderbird 10.0.5-2.el6_2 Red Hat Enterprise Linux Workstation (v. 6) firefox 10.0.5-1.el6_2, xulrunner 10.0.5-1.el6_2, thunderbird 10.0.5-2.el6_2 Red Hat Enterprise Linux Workstation Optional (v. 6) xulrunner 10.0.5-1.el6_2 Red Hat RHEL Desktop Workstation (v. 5 client) xulrunner 10.0.5-1.el5_8
    fixed: vendor fix RHSA-2012:0710
  • Red Hat RHEL Optional Productivity Applications (v. 5 server) thunderbird 10.0.5-2.el5_8
    fixed: vendor fix RHSA-2012:0715

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.80% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=736012 referenced PoC, tagged "exploit" by a source, unverified
  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=670317 referenced PoC, tagged "exploit" by a source, unverified
  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=730415 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.