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Fencer Intel
critical 9.3

CVE-2010-0177 json

Mozilla Firefox before 3.0.19, 3.5.x before 3.5.9, and 3.6.x before 3.6.2, and SeaMonkey before 2.0.4, frees the contents of the window.nav…

published 2010-04-05 16 y ago modified 2026-06-16 4 mo ago also EUVD-2010-0208

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.9%
EPSS 6.9% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

Mozilla Firefox before 3.0.19, 3.5.x before 3.5.9, and 3.6.x before 3.6.2, and SeaMonkey before 2.0.4, frees the contents of the window.navigator.plugins array while a reference to an array element is still active, which allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via unspecified vectors, related to a "dangling pointer vulnerability."

Patch / fix

  • thunderbird RHEL 5 PRODUCTIVITY, RHEL 5 2.0.0.24-6.el5
  • thunderbird RHEL 4 1.5.0.12-28.el4
  • seamonkey RHEL 3 1.0.9-0.52.el3
  • seamonkey RHEL 4 1.0.9-54.el4_8
  • seamonkey-nss RHEL 3 1.0.9-0.52.el3
  • seamonkey-chat RHEL 3 1.0.9-0.52.el3
  • seamonkey-chat RHEL 4 1.0.9-54.el4_8
  • seamonkey-mail RHEL 3 1.0.9-0.52.el3

red hat advisories RHSA-2010:0545RHSA-2010:0544RHSA-2010:0333RHSA-2010:0332

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

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

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-2010-0177 updated cvss 6.8

Mozilla Dangling pointer vulnerability in nsPluginArray

  • Red Hat Desktop version 3 seamonkey 1.0.9-0.52.el3, seamonkey-nss 1.0.9-0.52.el3, seamonkey-chat 1.0.9-0.52.el3, seamonkey-mail 1.0.9-0.52.el3, seamonkey-nspr 1.0.9-0.52.el3, seamonkey-js-debugger 1.0.9-0.52.el3, +1 more
    fixed: vendor fix RHSA-2010:0333
  • Red Hat Enterprise Linux (v. 5 server) firefox 3.0.19-1.el5_5, xulrunner 1.9.0.19-1.el5_5, xulrunner-devel-unstable 1.9.0.19-1.el5_5
    fixed: vendor fix RHSA-2010:0332
  • Red Hat Enterprise Linux AS version 3 seamonkey 1.0.9-0.52.el3, seamonkey-nss 1.0.9-0.52.el3, seamonkey-chat 1.0.9-0.52.el3, seamonkey-mail 1.0.9-0.52.el3, seamonkey-nspr 1.0.9-0.52.el3, seamonkey-js-debugger 1.0.9-0.52.el3, +1 more Red Hat Enterprise Linux AS version 4 firefox 3.0.19-1.el4, seamonkey 1.0.9-54.el4_8, thunderbird 1.5.0.12-28.el4, seamonkey-chat 1.0.9-54.el4_8, seamonkey-mail 1.0.9-54.el4_8, seamonkey-js-debugger 1.0.9-54.el4_8, +1 more
    fixed: vendor fix RHSA-2010:0333
  • Red Hat Enterprise Linux Desktop (v. 5 client) firefox 3.0.19-1.el5_5, thunderbird 2.0.0.24-6.el5, xulrunner 1.9.0.19-1.el5_5
    fixed: vendor fix RHSA-2010:0332
  • Red Hat Enterprise Linux Desktop version 4 firefox 3.0.19-1.el4, seamonkey 1.0.9-54.el4_8, thunderbird 1.5.0.12-28.el4, seamonkey-chat 1.0.9-54.el4_8, seamonkey-mail 1.0.9-54.el4_8, seamonkey-js-debugger 1.0.9-54.el4_8, +1 more
    fixed: vendor fix RHSA-2010:0333
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) xulrunner 1.9.0.19-1.el5_5, xulrunner-devel-unstable 1.9.0.19-1.el5_5
    fixed: vendor fix RHSA-2010:0332
  • Red Hat Enterprise Linux ES version 3 seamonkey 1.0.9-0.52.el3, seamonkey-nss 1.0.9-0.52.el3, seamonkey-chat 1.0.9-0.52.el3, seamonkey-mail 1.0.9-0.52.el3, seamonkey-nspr 1.0.9-0.52.el3, seamonkey-js-debugger 1.0.9-0.52.el3, +1 more Red Hat Enterprise Linux ES version 4 firefox 3.0.19-1.el4, seamonkey 1.0.9-54.el4_8, thunderbird 1.5.0.12-28.el4, seamonkey-chat 1.0.9-54.el4_8, seamonkey-mail 1.0.9-54.el4_8, seamonkey-js-debugger 1.0.9-54.el4_8, +1 more
    fixed: vendor fix RHSA-2010:0333
  • Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird 2.0.0.24-6.el5
    fixed: vendor fix RHSA-2010:0545
show 2 more
  • Red Hat Enterprise Linux WS version 3 seamonkey 1.0.9-0.52.el3, seamonkey-nss 1.0.9-0.52.el3, seamonkey-chat 1.0.9-0.52.el3, seamonkey-mail 1.0.9-0.52.el3, seamonkey-nspr 1.0.9-0.52.el3, seamonkey-js-debugger 1.0.9-0.52.el3, +1 more Red Hat Enterprise Linux WS version 4 firefox 3.0.19-1.el4, seamonkey 1.0.9-54.el4_8, thunderbird 1.5.0.12-28.el4, seamonkey-chat 1.0.9-54.el4_8, seamonkey-mail 1.0.9-54.el4_8, seamonkey-js-debugger 1.0.9-54.el4_8, +1 more
    fixed: vendor fix RHSA-2010:0333
  • Red Hat Enterprise Linux 6 firefox
    not affected: vulnerable code not present

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

6.94% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

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

Classification

Weakness
  • CWE-399 Resource Management Errors

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.