Security readout for executives and security teams
This CVE describes a remote denial-of-service issue in Kerio MailServer WebMail before 6.0.9. A specially problematic email message could drive high CPU usage, potentially degrading or interrupting mail access. The public record does not describe data theft, code execution, or confirmed active exploitation. Exposure is most likely where legacy Kerio MailServer WebMail instances older than 6.0.9 remain deployed, especially if reachable by external email flows or users. The source bundle does not provide CPEs, supported platform details, or deployment-specific prerequisites. Treat this as a legacy availability risk. It does not indicate compromise or data loss in the supplied evidence, but an exposed outdated mail server could suffer service disruption. Prioritize confirmation and upgrade if Kerio MailServer remains in use. Mitigation focus: Confirm whether Kerio MailServer WebMail is still deployed.; Upgrade Kerio MailServer to 6.0.9 or later where applicable.; Review Kerio vendor history or support guidance for legacy upgrade paths..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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CVE-2005-1138 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
Products and packages named in the record
CWE details
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