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CVE-2012-0479

16
FAUCET Score

CVE-2012-0479 describes a spoofing vulnerability affecting Mozilla Firefox, Thunderbird, and SeaMonkey versions, where a remote attacker could manipulate the address bar using an HTTPS URL with malformed RSS or Atom XML content. This medium-complexity attack (CVSS 4.3) could lead to information integrity compromise (I:P), but not confidentiality or 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

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.26%
Probability of exploitation in next 30 days
EPSS Percentile
81.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0226 is in the 69th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:10.0.4-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:10.0.4-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:10.0.4-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:10.0.4-1.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:10.0.4-1.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:10.0.4-1.el6_2
View patch

Vendor Advisories (1)

redhatCVE-2012-0479Moderate

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

Apr 24, 2012

References

bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/48920
secunia.com / advisories/48922
secunia.com / advisories/48972
secunia.com / advisories/49047
secunia.com / advisories/49055
exchange.xforce.ibmcloud.com / vulnerabilities/75156
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17011
debian.org / security/2012/dsa-2457
debian.org / security/2012/dsa-2458
debian.org / security/2012/dsa-2464
mandriva.com / security/advisories
mandriva.com / security/advisories
mozilla.org / security/announce/2012/mfsa2012-33.html
securityfocus.com / bid/53224