CVE-2007-3843

CVE-2007-3843 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

The Linux kernel before 2.6.23-rc1 checks the wrong global variable for the CIFS sec mount option, which might allow remote attackers to spoof CIFS network traffic that the client configured for security signatures, as demonstrated by lack of signing despite sec=ntlmv2i in a SetupAndX request.

Frequently asked questions

What is CVE-2007-3843?
The Linux kernel before 2.6.23-rc1 checks the wrong global variable for the CIFS sec mount option, which might allow remote attackers to spoof CIFS network traffic that the client configured for security signatures, as demonstrated by lack of signing despite sec=ntlmv2i in a SetupAndX request.
How severe is CVE-2007-3843?
CVE-2007-3843 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2007-3843 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-3843?
CVE-2007-3843 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-3843?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-3843 published?
CVE-2007-3843 was published on 2007-08-09 and last updated on 2026-06-16.

References

Affected products (1)

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