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CVE-2010-0169

15
FAUCET Score

CVE-2010-0169 describes a vulnerability in Mozilla Firefox, Thunderbird, and SeaMonkey where a case-changing error in the CSSLoaderImpl::DoSheetComplete function could lead to erroneous stylesheet caching. This flaw might allow remote attackers to alter browser fonts and CSS attributes, potentially disrupting web page rendering. With a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:N/I:P/A:N), it indicates a network-based attack with low complexity, requiring no authentication, and resulting in partial integrity impact without affecting confidentiality or availability. There is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage, suggesting a low exploitation risk.

Impacted Technologies

VendorProductVersion(s)CPE
3.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0:*:*:*:*:*:*:*
3.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.1:*:*:*:*:*:*:*
3.0.10CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.10:*:*:*:*:*:*:*
3.0.11CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.11:*:*:*:*:*:*:*
3.0.12CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.12:*:*:*:*:*:*:*

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
1.69%
Probability of exploitation in next 30 days
EPSS Percentile
74.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0169 is in the 60th percentile among its peer group of 23,723 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 (8)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:2.0.0.24-2.el5_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: seamonkey-0:1.0.9-0.50.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:3.0.18-1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.9-52.el4_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.12-25.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.0.18-1.el5_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.0.18-1.el5_4
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2010-0169Low

firefox/thunderbird/seamonkey: browser chrome defacement via cached XUL stylesheets (MFSA 2010-14)

Mar 23, 2010

References

bugzilla.mozilla.org / show_bug.cgi
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11391
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8431
mozilla.org / security/announce/2010/mfsa2010-14.html
Vendor Advisory
securityfocus.com / bid/38918
vupen.com / english/advisories/2010/0692