How severe is CVE-2008-4301?

CVE-2008-4301 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2008-4301 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4301?

CVE-2008-4301 affects Microsoft Internet Information Services. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-4301?

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-2008-4301 published?

CVE-2008-4301 was published on 2008-09-29 and last updated on 2026-06-16.

CVE-2008-4301

CVE-2008-4301 is a critical-severity vulnerability in Microsoft Internet Information Services with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 17% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 17% (97th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Internet Information Services
Published: 2008-09-29
Last modified: 2026-06-16

Description

A certain ActiveX control in iisext.dll in Microsoft Internet Information Services (IIS) allows remote attackers to set a password via a string argument to the SetPassword method. NOTE: this issue could not be reproduced by a reliable third party. In addition, the original researcher is unreliable. Therefore the original disclosure is probably erroneous

Frequently asked questions

What is CVE-2008-4301?: A certain ActiveX control in iisext.dll in Microsoft Internet Information Services (IIS) allows remote attackers to set a password via a string argument to the SetPassword method. NOTE: this issue could not be reproduced by a reliable third party. In addition, the original researcher is unreliable. Therefore the original disclosure is probably erroneous
How severe is CVE-2008-4301?: CVE-2008-4301 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2008-4301 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4301?: CVE-2008-4301 affects Microsoft Internet Information Services. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-4301?: 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-2008-4301 published?: CVE-2008-4301 was published on 2008-09-29 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:internet_information_services:-:*:*:*:*:*:*:*

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