How severe is CVE-2001-0327?

CVE-2001-0327 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-0327 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0327?

CVE-2001-0327 affects Iplanet Iplanet Web Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-0327?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2001-0327 published?

CVE-2001-0327 was published on 2001-07-02 and last updated on 2026-06-16.

CVE-2001-0327

CVE-2001-0327 is a medium-severity vulnerability in Iplanet Iplanet Web Server with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Iplanet Iplanet Web Server
Published: 2001-07-02
Last modified: 2026-06-16

Description

iPlanet Web Server Enterprise Edition 4.1 and earlier allows remote attackers to retrieve sensitive data from memory allocation pools, or cause a denial of service, via a URL-encoded Host: header in the HTTP request, which reveals memory in the Location: header that is returned by the server.

Frequently asked questions

What is CVE-2001-0327?: iPlanet Web Server Enterprise Edition 4.1 and earlier allows remote attackers to retrieve sensitive data from memory allocation pools, or cause a denial of service, via a URL-encoded Host: header in the HTTP request, which reveals memory in the Location: header that is returned by the server.
How severe is CVE-2001-0327?: CVE-2001-0327 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-0327 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0327?: CVE-2001-0327 affects Iplanet Iplanet Web Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-0327?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-0327 published?: CVE-2001-0327 was published on 2001-07-02 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:iplanet:iplanet_web_server:*:*:*:*:*:*:*:*

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