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

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MEDIUM

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

Published Mar 9, 2002

5.0

MEDIUM

CVSS 2.0

EPSS 3.12%

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.

Affected products

Remediation

No remediation recorded yet.

Metrics

3.12% 0.03120

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.03120

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	3.12% (0.03120)	87.38th	v5 (v2026.06.15)
Jun 15, 2026	3.12% (0.03120)	86.10th	v5 (v2026.06.15)
Mar 30, 2025	1.90% (0.01898)	81.61th	v4 (v2025.03.14)
Mar 29, 2025	2.95% (0.02949)	77.41th	v4 (v2025.03.14)
Mar 17, 2025	1.90% (0.01898)	82.02th	v4 (v2025.03.14)
Dec 12, 2024	1.43% (0.01427)	87.08th	v3 (v2023.03.01)
May 16, 2024	1.43% (0.01427)	86.47th	v3 (v2023.03.01)
Mar 7, 2023	1.43% (0.01427)	84.47th	v3 (v2023.03.01)
Mar 6, 2023	1.21% (0.01213)	66.61th	v2 (v2022.01.01)
Feb 17, 2023	1.21% (0.01213)	66.22th	v2 (v2022.01.01)
Apr 1, 2022	1.21% (0.01213)	64.21th	v2 (v2022.01.01)
Feb 4, 2022	1.21% (0.01213)	40.54th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (4)

http://www.atstake.com/research/advisories/2001/a041601-1.txt
vendor-advisoryx_refsource_ATSTAKEPatchVendor Advisory
http://www.iplanet.com/products/iplanet_web_enterprise/iwsalert4.16.html
x_refsource_CONFIRM
http://www.kb.cert.org/vuls/id/276767
third-party-advisoryx_refsource_CERT-VNUS Government Resource
http://www.osvdb.org/5704
vdb-entryx_refsource_OSVDB

Link	Providers	Tags
http://www.atstake.com/research/advisories/2001/a041601-1.txt		vendor-advisoryx_refsource_ATSTAKEPatchVendor Advisory
http://www.iplanet.com/products/iplanet_web_enterprise/iwsalert4.16.html		x_refsource_CONFIRM
http://www.kb.cert.org/vuls/id/276767		third-party-advisoryx_refsource_CERT-VNUS Government Resource
http://www.osvdb.org/5704		vdb-entryx_refsource_OSVDB

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Mar 9, 2002

Updated Aug 8, 2024

Reserved Apr 13, 2001

Link CVE-2001-0327

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2001-0327

Red Hat

Severity n/a

Public date n/a

Links CVE-2001-0327