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Fencer Intel
medium 4.3

CVE-2012-0479 json

Mozilla Firefox 4.x through 11.0, Firefox ESR 10.x before 10.0.4, Thunderbird 5.0 through 11.0, Thunderbird ESR 10.x before 10.0.4, and Sea…

published 2012-04-25 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-0511

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

Mozilla Firefox 4.x through 11.0, Firefox ESR 10.x before 10.0.4, Thunderbird 5.0 through 11.0, Thunderbird ESR 10.x before 10.0.4, and SeaMonkey before 2.9 allow remote attackers to spoof the address bar via an https URL for invalid (1) RSS or (2) Atom XML content.

Patch / fix

  • thunderbird RHEL 5 PRODUCTIVITY, RHEL 5 10.0.4-1.el5_8
  • thunderbird RHEL 6 10.0.4-1.el6_2
  • firefox RHEL 5 10.0.4-1.el5_8
  • firefox RHEL 6 10.0.4-1.el6_2
  • xulrunner RHEL 5 10.0.4-1.el5_8
  • xulrunner RHEL 6 10.0.4-1.el6_2

red hat advisories RHSA-2012:0516RHSA-2012:0515

  • 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-2012-0479 updated cvss 4.3

Mozilla: Potential site identity spoofing when loading RSS and Atom feeds (MFSA 2012-33)

  • Red Hat Enterprise Linux (v. 5 server) firefox 10.0.4-1.el5_8, xulrunner 10.0.4-1.el5_8 Red Hat Enterprise Linux Desktop (v. 5 client) firefox 10.0.4-1.el5_8, xulrunner 10.0.4-1.el5_8, thunderbird 10.0.4-1.el5_8 Red Hat Enterprise Linux Desktop (v. 6) firefox 10.0.4-1.el6_2, xulrunner 10.0.4-1.el6_2, thunderbird 10.0.4-1.el6_2 Red Hat Enterprise Linux Desktop Optional (v. 6) xulrunner 10.0.4-1.el6_2 Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 10.0.4-1.el6_2, xulrunner 10.0.4-1.el6_2 Red Hat Enterprise Linux Server (v. 6) firefox 10.0.4-1.el6_2, xulrunner 10.0.4-1.el6_2
    +4 more products
    Red Hat Enterprise Linux Server Optional (v. 6) xulrunner 10.0.4-1.el6_2, thunderbird 10.0.4-1.el6_2 Red Hat Enterprise Linux Workstation (v. 6) firefox 10.0.4-1.el6_2, xulrunner 10.0.4-1.el6_2, thunderbird 10.0.4-1.el6_2 Red Hat Enterprise Linux Workstation Optional (v. 6) xulrunner 10.0.4-1.el6_2 Red Hat RHEL Desktop Workstation (v. 5 client) xulrunner 10.0.4-1.el5_8
    fixed: vendor fix RHSA-2012:0515
  • Red Hat RHEL Optional Productivity Applications (v. 5 server) thunderbird 10.0.4-1.el5_8
    fixed: vendor fix RHSA-2012:0516

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

2.21% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

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.