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CVE-2008-5504

22
FAUCET Score

CVE-2008-5504 describes a critical vulnerability in Mozilla Firefox 2.x, specifically versions prior to 2.0.0.19, allowing remote attackers to execute arbitrary JavaScript with elevated chrome privileges. This high-severity flaw (CVSS 7.5) has a low attack complexity and requires no authentication, potentially leading to complete compromise of confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.0.0.18CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
2.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:2.0:*:*:*:*:*:*:*
2.0.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:2.0.0.1:*:*:*:*:*:*:*
2.0.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:2.0.0.2:*:*:*:*:*:*:*
2.0.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:2.0.0.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.55%
Probability of exploitation in next 30 days
EPSS Percentile
83.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0255 is in the 70th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: seamonkey-0:1.0.9-0.25.el2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: seamonkey-0:1.0.9-0.29.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.9-32.el4
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2008-5504Critical

Firefox 2 XSS attack vectors in feed preview

Dec 16, 2008

References

bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/33184
secunia.com / advisories/33189
secunia.com / advisories/33231
secunia.com / advisories/33523
secunia.com / advisories/34501
exchange.xforce.ibmcloud.com / vulnerabilities/47410
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10781
sunsolve.sun.com / search/document.do
debian.org / security/2009/dsa-1707
mandriva.com / security/advisories
mozilla.org / security/announce/2008/mfsa2008-62.html
Vendor Advisory
redhat.com / support/errata/RHSA-2008-1037.html
securityfocus.com / bid/32882
securitytracker.com / id
ubuntu.com / usn/usn-690-2
vupen.com / english/advisories/2009/0977