How severe is CVE-2009-2636?

CVE-2009-2636 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-2636 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2636?

CVE-2009-2636 primarily affects Kerio Kerio Mailserver. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2636?

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

When was CVE-2009-2636 published?

CVE-2009-2636 was published on 2009-07-28 and last updated on 2026-06-16.

CVE-2009-2636

CVE-2009-2636 is a medium-severity vulnerability in Kerio Kerio Mailserver with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Kerio Kerio Mailserver
Published: 2009-07-28
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in the Integration page in the WebMail component in Kerio MailServer 6.6.0, 6.6.1, 6.6.2, and 6.7.0 allows remote attackers to inject arbitrary web script or HTML via an e-mail message.

Frequently asked questions

What is CVE-2009-2636?: Cross-site scripting (XSS) vulnerability in the Integration page in the WebMail component in Kerio MailServer 6.6.0, 6.6.1, 6.6.2, and 6.7.0 allows remote attackers to inject arbitrary web script or HTML via an e-mail message.
How severe is CVE-2009-2636?: CVE-2009-2636 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-2636 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2636?: CVE-2009-2636 primarily affects Kerio Kerio Mailserver. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2636?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-2636 published?: CVE-2009-2636 was published on 2009-07-28 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:kerio:kerio_mailserver:6.6.0:*:*:*:*:*:*:*
cpe:2.3:a:kerio:kerio_mailserver:6.6.1:*:*:*:*:*:*:*
cpe:2.3:a:kerio:kerio_mailserver:6.6.2:*:*:*:*:*:*:*
cpe:2.3:a:kerio:kerio_mailserver:6.7.0:*:*:*:*:*:*:*

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