How severe is CVE-2007-5756?

CVE-2007-5756 has a CVSS 2.0 base score of 6.9, rated medium severity.

Is CVE-2007-5756 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-5756?

CVE-2007-5756 affects Winpcap. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-5756?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2007-5756 published?

CVE-2007-5756 was published on 2007-11-14 and last updated on 2026-06-16.

CVE-2007-5756

CVE-2007-5756 is a medium-severity vulnerability in Winpcap with a CVSS 2.0 base score of 6.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-129.

Key facts

Severity: Medium (CVSS 2.0 base score 6.9)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-129
Affected product: Winpcap
Published: 2007-11-14
Last modified: 2026-06-16

Description

Multiple array index errors in the bpf_filter_init function in NPF.SYS in WinPcap before 4.0.2, when run in monitor mode (aka Table Management Extensions or TME), and as used in Wireshark and possibly other products, allow local users to gain privileges via crafted IOCTL requests.

Frequently asked questions

What is CVE-2007-5756?: Multiple array index errors in the bpf_filter_init function in NPF.SYS in WinPcap before 4.0.2, when run in monitor mode (aka Table Management Extensions or TME), and as used in Wireshark and possibly other products, allow local users to gain privileges via crafted IOCTL requests.
How severe is CVE-2007-5756?: CVE-2007-5756 has a CVSS 2.0 base score of 6.9, rated medium severity.
Is CVE-2007-5756 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-5756?: CVE-2007-5756 affects Winpcap. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-5756?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-5756 published?: CVE-2007-5756 was published on 2007-11-14 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:winpcap:winpcap:*:*:*:*:*:*:*:*

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