How severe is CVE-1999-1241?

CVE-1999-1241 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-1999-1241 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-1241?

CVE-1999-1241 affects Microsoft Internet Explorer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-1241?

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-1999-1241 published?

CVE-1999-1241 was published on 1999-05-06 and last updated on 2026-06-16.

CVE-1999-1241

CVE-1999-1241 is a critical-severity vulnerability in Microsoft Internet Explorer with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Internet Explorer
Published: 1999-05-06
Last modified: 2026-06-16

Description

Internet Explorer, with a security setting below Medium, allows remote attackers to execute arbitrary commands via a malicious web page that uses the FileSystemObject ActiveX object.

Frequently asked questions

What is CVE-1999-1241?: Internet Explorer, with a security setting below Medium, allows remote attackers to execute arbitrary commands via a malicious web page that uses the FileSystemObject ActiveX object.
How severe is CVE-1999-1241?: CVE-1999-1241 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-1999-1241 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1241?: CVE-1999-1241 affects Microsoft Internet Explorer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-1241?: 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-1999-1241 published?: CVE-1999-1241 was published on 1999-05-06 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:internet_explorer:6.0.2900:*:*:*:*:*:*:*

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