How severe is CVE-2006-2380?

CVE-2006-2380 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2006-2380 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-2380?

CVE-2006-2380 affects Microsoft Windows 2000. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-2380?

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

When was CVE-2006-2380 published?

CVE-2006-2380 was published on 2006-06-13 and last updated on 2026-06-16.

CVE-2006-2380

CVE-2006-2380 is a medium-severity vulnerability in Microsoft Windows 2000 with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 18% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Microsoft Windows 2000
Published: 2006-06-13
Last modified: 2026-06-16

Description

Microsoft Windows 2000 SP4 does not properly validate an RPC server during mutual authentication over SSL, which allows remote attackers to spoof an RPC server, aka the "RPC Mutual Authentication Vulnerability."

Frequently asked questions

What is CVE-2006-2380?: Microsoft Windows 2000 SP4 does not properly validate an RPC server during mutual authentication over SSL, which allows remote attackers to spoof an RPC server, aka the "RPC Mutual Authentication Vulnerability."
How severe is CVE-2006-2380?: CVE-2006-2380 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2006-2380 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-2380?: CVE-2006-2380 affects Microsoft Windows 2000. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-2380?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-2380 published?: CVE-2006-2380 was published on 2006-06-13 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:microsoft:windows_2000:*:sp4:*:*:*:*:*:*

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