How severe is CVE-2009-0237?

CVE-2009-0237 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-0237 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0237?

CVE-2009-0237 primarily affects Microsoft Forefront Threat Management Gateway. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0237?

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

When was CVE-2009-0237 published?

CVE-2009-0237 was published on 2009-04-15 and last updated on 2026-06-16.

CVE-2009-0237

CVE-2009-0237 is a medium-severity vulnerability in Microsoft Forefront Threat Management Gateway with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 23% 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: 23% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Microsoft Forefront Threat Management Gateway
Published: 2009-04-15
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in cookieauth.dll in the HTML forms authentication component in Microsoft Forefront Threat Management Gateway, Medium Business Edition (TMG MBE); and Internet Security and Acceleration (ISA) Server 2006, 2006 Supportability Update, and 2006 SP1; allows remote attackers to inject arbitrary web script or HTML via "authentication input" to this component, aka "Cross-Site Scripting Vulnerability."

Frequently asked questions

What is CVE-2009-0237?: Cross-site scripting (XSS) vulnerability in cookieauth.dll in the HTML forms authentication component in Microsoft Forefront Threat Management Gateway, Medium Business Edition (TMG MBE); and Internet Security and Acceleration (ISA) Server 2006, 2006 Supportability Update, and 2006 SP1; allows remote attackers to inject arbitrary web script or HTML via "authentication input" to this component, aka "Cross-Site Scripting Vulnerability."
How severe is CVE-2009-0237?: CVE-2009-0237 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-0237 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0237?: CVE-2009-0237 primarily affects Microsoft Forefront Threat Management Gateway. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0237?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-0237 published?: CVE-2009-0237 was published on 2009-04-15 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:microsoft:forefront_threat_management_gateway:-:-:medium_business:*:*:*:*:*
cpe:2.3:a:microsoft:internet_security_and_acceleration_server:2004:sp3:enterprise:*:*:*:*:*
cpe:2.3:a:microsoft:internet_security_and_acceleration_server:2004:sp3:standard:*:*:*:*:*
cpe:2.3:a:microsoft:internet_security_and_acceleration_server:2006:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_security_and_acceleration_server:2006:supportability:*:*:*:*:*:*

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