How severe is CVE-2006-0538?

CVE-2006-0538 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2006-0538 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-0538?

CVE-2006-0538 affects Ciphertrust Ironmail. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-0538?

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

When was CVE-2006-0538 published?

CVE-2006-0538 was published on 2006-02-04 and last updated on 2026-06-16.

CVE-2006-0538

CVE-2006-0538 is a low-severity vulnerability in Ciphertrust Ironmail with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.6)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ciphertrust Ironmail
Published: 2006-02-04
Last modified: 2026-06-16

Description

CipherTrust IronMail 5.0.1, when "Denial of Service Protection" is enabled, allows remote attackers to cause a denial of service (possibly CPU consumption) via a SYN flood with malformed TCP packets from multiple connections.

Frequently asked questions

What is CVE-2006-0538?: CipherTrust IronMail 5.0.1, when "Denial of Service Protection" is enabled, allows remote attackers to cause a denial of service (possibly CPU consumption) via a SYN flood with malformed TCP packets from multiple connections.
How severe is CVE-2006-0538?: CVE-2006-0538 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2006-0538 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0538?: CVE-2006-0538 affects Ciphertrust Ironmail. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-0538?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-0538 published?: CVE-2006-0538 was published on 2006-02-04 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:ciphertrust:ironmail:*:*:*:*:*:*:*:*

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