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CVE-2009-3075

28
FAUCET Score

CVE-2009-3075 describes multiple unspecified vulnerabilities in the JavaScript engine of Mozilla Firefox (versions before 3.0.14 and 3.5.2), Thunderbird (before 2.0.0.24), and SeaMonkey (before 1.1.19). These flaws, particularly one involving mutable strings in the js_StringReplaceHelper function, could allow remote attackers to trigger a denial of service through memory corruption and application crashes. With a CVSS score of 10.0, this vulnerability is considered critical, indicating it can be exploited remotely with low complexity and potentially lead to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

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

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
5.27%
Probability of exploitation in next 30 days
EPSS Percentile
91.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0527 is in the 85th percentile among its peer group of 51,506 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 (10)

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-0:1.0.9-0.45.el3
View patch
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 4Fixed in: seamonkey-0:1.0.9-48.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-0:3.0.14-1.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-2009-3075Critical

Firefox 3.5.2 3.0.14 JavaScript engine crashes

Sep 9, 2009

References

lists.opensuse.org / opensuse-security-announce/2010-06/msg00001.html
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/36669
secunia.com / advisories/36670
secunia.com / advisories/36671
secunia.com / advisories/36692
secunia.com / advisories/37098
secunia.com / advisories/38977
secunia.com / advisories/39001
exchange.xforce.ibmcloud.com / vulnerabilities/53158
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11365
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5717
debian.org / security/2009/dsa-1885
mozilla.org / security/announce/2009/mfsa2009-47.html
Vendor Advisory
mozilla.org / security/announce/2010/mfsa2010-07.html
novell.com / linux/security/advisories/2009_48_firefox.html
redhat.com / support/errata/RHSA-2009-1430.html
redhat.com / support/errata/RHSA-2009-1431.html
redhat.com / support/errata/RHSA-2009-1432.html
redhat.com / support/errata/RHSA-2010-0153.html
redhat.com / support/errata/RHSA-2010-0154.html
securityfocus.com / bid/36343
ubuntu.com / usn/USN-915-1
vupen.com / english/advisories/2010/0648
vupen.com / english/advisories/2010/0650