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CVE-2009-3980

28
FAUCET Score

CVE-2009-3980 describes multiple unspecified vulnerabilities within the browser engine of Mozilla Firefox 3.5.x, SeaMonkey, and Thunderbird. These flaws could be exploited by remote attackers to trigger a denial of service through memory corruption and application crashes, or potentially achieve arbitrary code execution. With a CVSS score of 9.3, this vulnerability is considered critical due to its network-based attack vector, medium complexity, and high impact on 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
3.5.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.5.1:*:*:*:*:*:*:*
3.5.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.5.2:*:*:*:*:*:*:*
3.5.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.5.3:*:*:*:*:*:*:*
3.5.4CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.5.4:*:*:*:*:*:*:*
3.5.5CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.5.5:*:*:*:*:*:*:*

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
3.72%
Probability of exploitation in next 30 days
EPSS Percentile
88.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0372 is in the 49th 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 (1)

mozillapatch availablevia nvd_reference
View patch

References

bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/37699
Vendor Advisory
secunia.com / advisories/37785
Vendor Advisory
secunia.com / advisories/37856
secunia.com / advisories/37881
securitytracker.com / id
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/54800
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8503
redhat.com / archives/fedora-package-announce/2009-December/msg00995.html
redhat.com / archives/fedora-package-announce/2009-December/msg01034.html
redhat.com / archives/fedora-package-announce/2009-December/msg01041.html
mozilla.org / security/announce/2009/mfsa2009-65.html
PatchVendor Advisory
novell.com / linux/security/advisories/2009_63_firefox.html
securityfocus.com / bid/37349
securityfocus.com / bid/37362
ubuntu.com / usn/USN-874-1
vupen.com / english/advisories/2009/3547
PatchVendor Advisory