How severe is CVE-2008-0551?

CVE-2008-0551 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2008-0551 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 30% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-0551?

CVE-2008-0551 primarily affects Microsoft Activex. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-0551?

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-2008-0551 published?

CVE-2008-0551 was published on 2008-02-01 and last updated on 2026-06-16.

CVE-2008-0551

CVE-2008-0551 is a critical-severity vulnerability in Microsoft Activex with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 30% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 30% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Microsoft Activex
Published: 2008-02-01
Last modified: 2026-06-16

Description

The NamoInstaller.NamoInstall.1 ActiveX control in NamoInstaller.dll 3.0.0.1 and earlier in Namo Web Editor in Sejoong Namo ActiveSquare 6 allows remote attackers to execute arbitrary code via a URL in the argument to the Install method. NOTE: some of these details are obtained from third party information.

Frequently asked questions

What is CVE-2008-0551?: The NamoInstaller.NamoInstall.1 ActiveX control in NamoInstaller.dll 3.0.0.1 and earlier in Namo Web Editor in Sejoong Namo ActiveSquare 6 allows remote attackers to execute arbitrary code via a URL in the argument to the Install method. NOTE: some of these details are obtained from third party information.
How severe is CVE-2008-0551?: CVE-2008-0551 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2008-0551 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 30% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-0551?: CVE-2008-0551 primarily affects Microsoft Activex. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-0551?: 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-2008-0551 published?: CVE-2008-0551 was published on 2008-02-01 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:microsoft:activex:*:*:*:*:*:*:*:*
cpe:2.3:a:sejoong_namo:activesquare:6:*:*:*:*:*:*:*

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