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CVE-2008-2809

14
FAUCET Score

CVE-2008-2809 describes a vulnerability in Mozilla-based web browsers, including Firefox and SeaMonkey, where accepting an SSL certificate based on its Common Name (CN) also implicitly accepts all domain names listed in the subjectAltName field. This flaw could allow remote attackers to trick users into accepting invalid certificates for spoofed websites. The vulnerability has a CVSS score of 4.0, indicating a network-based attack with high access complexity and partial impact on integrity and availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
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:*:*:*:*:*:*:*
2.0.0.4CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:2.0.0.4:*:*:*:*:*:*:*
2.0.0.5CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:2.0.0.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.24%
Probability of exploitation in next 30 days
EPSS Percentile
66.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0124 is in the 33rd percentile among its peer group of 19,954 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, 0.0 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 (10)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: seamonkey-0:1.0.9-0.17.el2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: seamonkey-0:1.0.9-0.20.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.9-16.3.el4_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:1.5.0.12-0.19.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.12-14.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: devhelp-0:0.12-17.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.0-2.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9-1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: yelp-0:2.16.0-19.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:2.0.0.16-1.el5
View patch

Vendor Advisories (1)

redhatCVE-2008-2809Moderate

Firefox self signed certificate flaw

Jul 2, 2008

References

lists.opensuse.org / opensuse-security-announce/2008-07/msg00004.html
nils.toedtmann.net / pub/subjectAltName.txt
rhn.redhat.com / errata/RHSA-2008-0616.html
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/30878
secunia.com / advisories/30898
secunia.com / advisories/30903
secunia.com / advisories/30911
Vendor Advisory
secunia.com / advisories/30949
secunia.com / advisories/31005
secunia.com / advisories/31008
secunia.com / advisories/31021
secunia.com / advisories/31023
secunia.com / advisories/31069
secunia.com / advisories/31076
secunia.com / advisories/31183
secunia.com / advisories/31195
secunia.com / advisories/31220
secunia.com / advisories/31253
secunia.com / advisories/31286
secunia.com / advisories/31377
secunia.com / advisories/31403
secunia.com / advisories/33433
secunia.com / advisories/34501
security.gentoo.org / glsa/glsa-200808-03.xml
securityreason.com / securityalert/3498
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/43524
issues.rpath.com / browse/RPL-2646
slackware.com / security/viewer.php
slackware.com / security/viewer.php
slackware.com / security/viewer.php
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10205
sunsolve.sun.com / search/document.do
redhat.com / archives/fedora-package-announce/2008-August/msg00125.html
redhat.com / archives/fedora-package-announce/2008-August/msg00144.html
redhat.com / archives/fedora-package-announce/2008-July/msg00207.html
redhat.com / archives/fedora-package-announce/2008-July/msg00288.html
redhat.com / archives/fedora-package-announce/2008-July/msg00295.html
wiki.rpath.com / Advisories:rPSA-2008-0216
debian.org / security/2008/dsa-1607
debian.org / security/2008/dsa-1615
debian.org / security/2008/dsa-1621
debian.org / security/2009/dsa-1697
mandriva.com / security/advisories
mandriva.com / security/advisories
mozilla.org / projects/security/known-vulnerabilities.html
mozilla.org / security/announce/2008/mfsa2008-31.html
redhat.com / support/errata/RHSA-2008-0547.html
redhat.com / support/errata/RHSA-2008-0549.html
redhat.com / support/errata/RHSA-2008-0569.html
securityfocus.com / archive/1/483929/100/100/threaded
securityfocus.com / archive/1/483937/100/100/threaded
securityfocus.com / archive/1/483960/100/100/threaded
securityfocus.com / archive/1/494080/100/0/threaded
securityfocus.com / bid/30038
securitytracker.com / id
ubuntu.com / usn/usn-619-1
ubuntu.com / usn/usn-629-1
vupen.com / english/advisories/2008/1993/references
vupen.com / english/advisories/2009/0977