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CVE-2008-0420

25
FAUCET Score

CVE-2008-0420 describes an out-of-bounds read vulnerability in Mozilla Firefox, Thunderbird, and SeaMonkey, specifically within the nsBMPDecoder.cpp module. A crafted 8-bit bitmap (BMP) file could trigger this flaw, leading to the disclosure of uninitialized memory or a denial of service (application crash). With a CVSS score of 9.3, this vulnerability is considered critical, allowing for remote exploitation with medium attack complexity and potential for complete compromise of confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.0.0.11CPE 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

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.22%
Probability of exploitation in next 30 days
EPSS Percentile
80.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0222 is in the 38th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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 (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: seamonkey-0:1.0.9-0.9.el2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: seamonkey-0:1.0.9-0.9.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:1.5.0.12-0.10.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.9-9.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.12-8.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:1.5.0.12-9.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:1.5.0.12-8.el5
View patch

Vendor Advisories (1)

redhatCVE-2008-0420Moderate

Mozilla information disclosure flaw

Feb 7, 2008

References

browser.netscape.com / releasenotes
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/28758
Vendor Advisory
secunia.com / advisories/28839
Vendor Advisory
secunia.com / advisories/29049
Vendor Advisory
secunia.com / advisories/29098
Vendor Advisory
secunia.com / advisories/29167
Vendor Advisory
secunia.com / advisories/30327
Vendor Advisory
secunia.com / advisories/30620
Vendor Advisory
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/40491
exchange.xforce.ibmcloud.com / vulnerabilities/40606
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10119
sunsolve.sun.com / search/document.do
usn.ubuntu.com / 576-1
redhat.com / archives/fedora-package-announce/2008-February/msg00905.html
redhat.com / archives/fedora-package-announce/2008-February/msg00946.html
gentoo.org / security/en/glsa/glsa-200805-18.xml
mandriva.com / security/advisories
mozilla.org / security/announce/2008/mfsa2008-07.html
securityfocus.com / archive/1/488264/100/0/threaded
securityfocus.com / bid/27826
ubuntu.com / usn/usn-582-1
ubuntu.com / usn/usn-582-2
vupen.com / english/advisories/2008/0627/references
Vendor Advisory
vupen.com / english/advisories/2008/1793/references
Vendor Advisory