How severe is CVE-2001-0726?

CVE-2001-0726 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2001-0726 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0726?

CVE-2001-0726 affects Microsoft Exchange Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-0726?

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-2001-0726 published?

CVE-2001-0726 was published on 2001-12-06 and last updated on 2026-06-16.

CVE-2001-0726

CVE-2001-0726 is a high-severity vulnerability in Microsoft Exchange Server with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 16% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 16% (97th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Exchange Server
Published: 2001-12-06
Last modified: 2026-06-16

Description

Outlook Web Access (OWA) in Microsoft Exchange 5.5 Server, when used with Internet Explorer, does not properly detect certain inline script, which can allow remote attackers to perform arbitrary actions on a user's Exchange mailbox via an HTML e-mail message.

Frequently asked questions

What is CVE-2001-0726?: Outlook Web Access (OWA) in Microsoft Exchange 5.5 Server, when used with Internet Explorer, does not properly detect certain inline script, which can allow remote attackers to perform arbitrary actions on a user's Exchange mailbox via an HTML e-mail message.
How severe is CVE-2001-0726?: CVE-2001-0726 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2001-0726 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0726?: CVE-2001-0726 affects Microsoft Exchange Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-0726?: 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-2001-0726 published?: CVE-2001-0726 was published on 2001-12-06 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:exchange_server:5.5:-:*:*:*:*:*:*

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