CVE-2000-0439

CVE-2000-0439 is a low-severity vulnerability in Microsoft Internet Explorer with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Internet Explorer 4.0 and 5.0 allows a malicious web site to obtain client cookies from another domain by including that domain name and escaped characters in a URL, aka the "Unauthorized Cookie Access" vulnerability.

Frequently asked questions

What is CVE-2000-0439?
Internet Explorer 4.0 and 5.0 allows a malicious web site to obtain client cookies from another domain by including that domain name and escaped characters in a URL, aka the "Unauthorized Cookie Access" vulnerability.
How severe is CVE-2000-0439?
CVE-2000-0439 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2000-0439 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-2000-0439?
CVE-2000-0439 primarily affects Microsoft Internet Explorer. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0439?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0439 published?
CVE-2000-0439 was published on 2000-05-11 and last updated on 2026-06-16.

References

Affected products (6)

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