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CVE-2009-3078

17
FAUCET Score

CVE-2009-3078 is a visual truncation vulnerability affecting Mozilla Firefox versions prior to 3.0.14 and 3.5.3. This flaw allows remote attackers to spoof URLs by manipulating Unicode characters and line-height properties, causing a vertical scroll. With a CVSS score of 5.0, it is a medium-severity vulnerability that can be exploited remotely with low complexity, potentially leading to information integrity issues. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.13CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.1:*:*:*:*:*:*:*
0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.2:*:*:*:*:*:*:*
0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.3:*:*:*:*:*:*:*
0.4CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.25%
Probability of exploitation in next 30 days
EPSS Percentile
81.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0225 is in the 71st percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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 4Fixed in: firefox-0:3.0.14-1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: nspr-0:4.7.5-1.el4_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.0.14-1.el5_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: nspr-0:4.7.5-1.el5_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.0.14-1.el5_4
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2009-3078Low

Firefox 3.5.3 3.0.14 Location bar spoofing via tall line-height Unicode characters

Sep 9, 2009

References

bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/36670
secunia.com / advisories/36671
secunia.com / advisories/36692
secunia.com / advisories/37098
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10871
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5418
debian.org / security/2009/dsa-1885
mozilla.org / security/announce/2009/mfsa2009-50.html
Vendor Advisory
novell.com / linux/security/advisories/2009_48_firefox.html
redhat.com / support/errata/RHSA-2009-1430.html
securityfocus.com / bid/36343
securitytracker.com / id