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CVE-2009-3382

46
FAUCET Score

CVE-2009-3382 is a critical memory corruption vulnerability affecting Mozilla Firefox 3.0.x before version 3.0.15, stemming from improper handling of first-letter frames in its browser engine. With a CVSS score of 10.0, it poses a severe risk of denial of service (application crash) and potential arbitrary code execution, requiring no authentication and low attack complexity. While not listed on CISA's KEV catalog and showing no social media or media coverage, an exploit for remote memory corruption is available on ExploitDB, indicating its exploitability.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.1:*:*:*:*:*:*:*
3.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.2:*:*:*:*:*:*:*
3.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.3:*:*:*:*:*:*:*
3.0.4CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.4:*:*:*:*:*:*:*
3.0.5CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.5:*:*:*:*:*:*:*

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
10.84%
Probability of exploitation in next 30 days
EPSS Percentile
95.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-33314 · Oct 27, 2009
This CVE's current EPSS score of 0.1084 is in the 93rd percentile among its peer group of 51,553 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 (6)

mozillapatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:3.0.15-3.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: nspr-0:4.7.6-1.el4_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.0.15-3.el5_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: nspr-0:4.7.6-1.el5_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.0.15-3.el5_4
View patch

Vendor Advisories (1)

redhatCVE-2009-3382Critical

Firefox crashes with evidence of memory corruption

Oct 27, 2009

References

bugzilla.mozilla.org / show_bug.cgi
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11219
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5581
sunsolve.sun.com / search/document.do
mozilla.org / security/announce/2009/mfsa2009-64.html
PatchVendor Advisory
vupen.com / english/advisories/2009/3334