How severe is CVE-1999-0876?

CVE-1999-0876 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-1999-0876 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0876?

CVE-1999-0876 primarily affects Microsoft Ie. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0876?

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-1999-0876 published?

CVE-1999-0876 was published on 2000-01-04 and last updated on 2026-06-16.

CVE-1999-0876

CVE-1999-0876 is a critical-severity vulnerability in Microsoft Ie with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Microsoft Ie
Published: 2000-01-04
Last modified: 2026-06-16

Description

Buffer overflow in Internet Explorer 4.0 via EMBED tag.

Frequently asked questions

What is CVE-1999-0876?: Buffer overflow in Internet Explorer 4.0 via EMBED tag.
How severe is CVE-1999-0876?: CVE-1999-0876 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-1999-0876 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0876?: CVE-1999-0876 primarily affects Microsoft Ie. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0876?: 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-1999-0876 published?: CVE-1999-0876 was published on 2000-01-04 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:microsoft:ie:3.0:*:mac_os:*:*:*:*:*
cpe:2.3:a:microsoft:ie:3.1:*:mac_os:*:*:*:*:*
cpe:2.3:a:microsoft:ie:4.0:a:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:4.1:*:*:*:*:*:*:*

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