How severe is CVE-2008-3466?

CVE-2008-3466 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2008-3466 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 78% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-3466?

CVE-2008-3466 primarily affects Microsoft Host Integration Server 2000. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-3466?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2008-3466 published?

CVE-2008-3466 was published on 2008-10-15 and last updated on 2026-06-16.

CVE-2008-3466

CVE-2008-3466 is a critical-severity vulnerability in Microsoft Host Integration Server 2000 with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 78% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 78% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Microsoft Host Integration Server 2000
Published: 2008-10-15
Last modified: 2026-06-16

Description

Microsoft Host Integration Server (HIS) 2000, 2004, and 2006 does not limit RPC access to administrative functions, which allows remote attackers to bypass authentication and execute arbitrary programs via a crafted SNA RPC message using opcode 1 or 6 to call the CreateProcess function, aka "HIS Command Execution Vulnerability."

Frequently asked questions

What is CVE-2008-3466?: Microsoft Host Integration Server (HIS) 2000, 2004, and 2006 does not limit RPC access to administrative functions, which allows remote attackers to bypass authentication and execute arbitrary programs via a crafted SNA RPC message using opcode 1 or 6 to call the CreateProcess function, aka "HIS Command Execution Vulnerability."
How severe is CVE-2008-3466?: CVE-2008-3466 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2008-3466 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 78% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-3466?: CVE-2008-3466 primarily affects Microsoft Host Integration Server 2000. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-3466?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-3466 published?: CVE-2008-3466 was published on 2008-10-15 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:microsoft:host_integration_server_2000:*:*:*:*:client:*:*:*
cpe:2.3:a:microsoft:host_integration_server_2000:*:sp2:*:*:server:*:*:*
cpe:2.3:a:microsoft:host_integration_server_2004:*:*:*:*:client:*:*:*
cpe:2.3:a:microsoft:host_integration_server_2004:*:*:*:*:server:*:*:*
cpe:2.3:a:microsoft:host_integration_server_2004:*:sp1:*:*:server:*:*:*
cpe:2.3:a:microsoft:host_integration_server_2006:*:*:*:*:*:*:x64:*
cpe:2.3:a:microsoft:host_integration_server_2006:*:*:*:*:*:*:x86:*

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