How severe is CVE-1999-0967?

CVE-1999-0967 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-1999-0967 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0967?

CVE-1999-0967 primarily affects Microsoft Internet Explorer. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0967?

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-1999-0967 published?

CVE-1999-0967 was published on 1997-11-01 and last updated on 2026-06-16.

CVE-1999-0967

CVE-1999-0967 is a critical-severity vulnerability in Microsoft Internet Explorer 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.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Internet Explorer
Published: 1997-11-01
Last modified: 2026-06-16

Description

Buffer overflow in the HTML library used by Internet Explorer, Outlook Express, and Windows Explorer via the res: local resource protocol.

Frequently asked questions

What is CVE-1999-0967?: Buffer overflow in the HTML library used by Internet Explorer, Outlook Express, and Windows Explorer via the res: local resource protocol.
How severe is CVE-1999-0967?: CVE-1999-0967 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-1999-0967 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0967?: CVE-1999-0967 primarily affects Microsoft Internet Explorer. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0967?: 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-1999-0967 published?: CVE-1999-0967 was published on 1997-11-01 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0967

Affected products (3)

cpe:2.3:a:microsoft:internet_explorer:4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:outlook_express:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:windows_explorer:*:*:*:*:*:*:*:*

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