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CVE-2007-3740

14
FAUCET Score

CVE-2007-3740 describes a privilege escalation vulnerability in the CIFS filesystem of the Linux kernel before version 2.6.22, specifically when Unix extension support is enabled. This flaw allows local users to gain elevated privileges because the system fails to properly enforce the umask of a process. The vulnerability has a CVSS score of 4.4, indicating a medium attack complexity and potential for partial compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.21.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
2.2.27CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.2.27:*:*:*:*:*:*:*
2.4.36CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.4.36:*:*:*:*:*:*:*
2.4.36.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.4.36.1:*:*:*:*:*:*:*
2.4.36.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.4.36.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.4MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 48th percentile among its peer group of 1,595 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 0.1 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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kernel-0:2.6.9-55.0.12.EL
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-8.1.10.el5
View patch

Vendor Advisories (1)

redhatCVE-2007-3740Important

CIFS should honor umask

Jun 8, 2007

References

lists.opensuse.org / opensuse-security-announce/2007-12/msg00001.html
lists.opensuse.org / opensuse-security-announce/2008-02/msg00002.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/26760
Vendor Advisory
secunia.com / advisories/26955
Vendor Advisory
secunia.com / advisories/26978
Vendor Advisory
secunia.com / advisories/27436
Vendor Advisory
secunia.com / advisories/27747
Vendor Advisory
secunia.com / advisories/27912
Vendor Advisory
secunia.com / advisories/28806
Vendor Advisory
secunia.com / advisories/29058
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/36593
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9953
support.avaya.com / elmodocs2/security/ASA-2007-474.htm
debian.org / security/2007/dsa-1378
debian.org / security/2008/dsa-1504
kernel.org / pub/linux/kernel/v2.6/ChangeLog-2.6.22
mandriva.com / security/advisories
mandriva.com / security/advisories
redhat.com / support/errata/RHSA-2007-0705.html
redhat.com / support/errata/RHSA-2007-0939.html
securityfocus.com / bid/25672
ubuntu.com / usn/usn-518-1