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CVE-2009-4067

34
FAUCET Score

CVE-2009-4067 describes a buffer overflow in the Auerswald Linux USB driver (auerswald_probe function) affecting Linux kernel versions before 2.6.27, including Red Hat Enterprise Linux. This vulnerability allows a physically proximate attacker to execute arbitrary code, cause a denial of service, or gain full system control via a specially crafted USB device. With a CVSS score of 6.8 (MEDIUM), it requires physical access but has high confidentiality, integrity, and availability impacts. While there is no evidence of active exploitation, a Proof-of-Concept exploit exists on ExploitDB, and the vulnerability has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.6.27CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.8MEDIUM

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.06%
Probability of exploitation in next 30 days
EPSS Percentile
79.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-35957 · Oct 19, 2009
This CVE's current EPSS score of 0.0206 is in the 99th percentile among its peer group of 1,532 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-274.7.1.el5
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2009-4067Low

kernel: usb: buffer overflow in auerswald_probe()

Oct 29, 2009

References

labs.mwrinfosecurity.com / files/Advisories/mwri_linux-usb-buffer-overflow_2009-10-29.pdf
ExploitTechnical DescriptionThird Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory