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Fencer Intel
critical 9.3

CVE-2010-3766 json

Use-after-free vulnerability in Mozilla Firefox before 3.5.16 and 3.6.x before 3.6.13, and SeaMonkey before 2.0.11, allows remote attackers…

published 15y ago modified 4mo ago also EUVD-2010-3745

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.0%
EPSS 7.0% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

Use-after-free vulnerability in Mozilla Firefox before 3.5.16 and 3.6.x before 3.6.13, and SeaMonkey before 2.0.11, allows remote attackers to execute arbitrary code via vectors involving a change to an nsDOMAttribute node.

Patch / fix

  • firefox RHEL 4 3.6.13-3.el4
  • firefox RHEL 5 3.6.13-2.el5
  • firefox RHEL 6 3.6.13-2.el6_0
  • xulrunner RHEL 5 1.9.2.13-3.el5
  • xulrunner RHEL 6 1.9.2.13-3.el6_0

red hat advisories RHSA-2010:0966

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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-2010-3766 updated cvss 6.8

Mozilla use-after-free error with nsDOMAttribute MutationObserver (MFSA 2010-80)

  • Red Hat Enterprise Linux (v. 5 server) firefox 3.6.13-2.el5, xulrunner 1.9.2.13-3.el5 Red Hat Enterprise Linux AS version 4 firefox 3.6.13-3.el4 Red Hat Enterprise Linux Desktop (v. 5 client) firefox 3.6.13-2.el5, xulrunner 1.9.2.13-3.el5 Red Hat Enterprise Linux Desktop (v. 6) firefox 3.6.13-2.el6_0, xulrunner 1.9.2.13-3.el6_0 Red Hat Enterprise Linux Desktop Optional (v. 6) xulrunner 1.9.2.13-3.el6_0 Red Hat Enterprise Linux Desktop version 4 firefox 3.6.13-3.el4
    +8 more products
    Red Hat Enterprise Linux Desktop Workstation (v. 5 client) xulrunner 1.9.2.13-3.el5 Red Hat Enterprise Linux ES version 4 firefox 3.6.13-3.el4 Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 3.6.13-2.el6_0, xulrunner 1.9.2.13-3.el6_0 Red Hat Enterprise Linux Server (v. 6) firefox 3.6.13-2.el6_0, xulrunner 1.9.2.13-3.el6_0 Red Hat Enterprise Linux Server Optional (v. 6) xulrunner 1.9.2.13-3.el6_0 Red Hat Enterprise Linux Workstation (v. 6) firefox 3.6.13-2.el6_0, xulrunner 1.9.2.13-3.el6_0 Red Hat Enterprise Linux Workstation Optional (v. 6) xulrunner 1.9.2.13-3.el6_0 Red Hat Enterprise Linux WS version 4 firefox 3.6.13-3.el4
    fixed: vendor fix RHSA-2010:0966

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

7.00% 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.