How severe is CVE-2010-2091?

CVE-2010-2091 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2010-2091 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-2091?

CVE-2010-2091 affects Microsoft Exchange Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2010-2091?

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

When was CVE-2010-2091 published?

CVE-2010-2091 was published on 2010-05-27 and last updated on 2026-06-16.

CVE-2010-2091

CVE-2010-2091 is a medium-severity vulnerability in Microsoft Exchange Server with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 18% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Microsoft Exchange Server
Published: 2010-05-27
Last modified: 2026-06-16

Description

Microsoft Outlook Web Access (OWA) 8.2.254.0, when Internet Explorer 7 on Windows Server 2003 is used, does not properly handle the id parameter in a Folder IPF.Note action to the default URI, which might allow remote attackers to obtain sensitive information or conduct cross-site scripting (XSS) attacks via an invalid value.

Frequently asked questions

What is CVE-2010-2091?: Microsoft Outlook Web Access (OWA) 8.2.254.0, when Internet Explorer 7 on Windows Server 2003 is used, does not properly handle the id parameter in a Folder IPF.Note action to the default URI, which might allow remote attackers to obtain sensitive information or conduct cross-site scripting (XSS) attacks via an invalid value.
How severe is CVE-2010-2091?: CVE-2010-2091 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2010-2091 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-2091?: CVE-2010-2091 affects Microsoft Exchange Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2010-2091?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-2091 published?: CVE-2010-2091 was published on 2010-05-27 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:exchange_server:2007:sp2_update_rollup_4:*:*:*:*:*:*

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