How severe is CVE-2001-0658?

CVE-2001-0658 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2001-0658 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0658?

CVE-2001-0658 affects Microsoft Isa Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-0658?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2001-0658 published?

CVE-2001-0658 was published on 2001-09-20 and last updated on 2026-06-16.

CVE-2001-0658

CVE-2001-0658 is a high-severity vulnerability in Microsoft Isa Server with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Isa Server
Published: 2001-09-20
Last modified: 2026-06-16

Description

Cross-site scripting (CSS) vulnerability in Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to cause other clients to execute certain script or read cookies via malicious script in an invalid URL that is not properly quoted in an error message.

Frequently asked questions

What is CVE-2001-0658?: Cross-site scripting (CSS) vulnerability in Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to cause other clients to execute certain script or read cookies via malicious script in an invalid URL that is not properly quoted in an error message.
How severe is CVE-2001-0658?: CVE-2001-0658 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2001-0658 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0658?: CVE-2001-0658 affects Microsoft Isa Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-0658?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2001-0658 published?: CVE-2001-0658 was published on 2001-09-20 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:isa_server:2000:*:*:*:*:*:*:*

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