CVE-2006-6554

Unspecified vulnerability in Kerio MailServer before 6.3.1 allows remote attackers to cause a denial of service (segmentation fault and service stop) via certain long LDAP queries, as demonstrated by vd_kms6.pm.

Published: 2006-12-14 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-6554 is rated Moderate Risk (44.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.44%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2006-6554

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.88% 1.44% +0.56%
2 2025-08-02 0.72% 0.88% +0.16%
3 2025-03-30 — 0.72% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-6554

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2006-6554

OS Trackers for CVE-2006-6554

vendor priority summary link
alpine — CVE-2006-6554: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-2006-6554

NVD evaluator notes for CVE-2006-6554

Solution: This vulnerability is addressed in the following product release: Kerio, Kerio MailServer, 6.3.1

Affected software / configurations for CVE-2006-6554

Vendor Product Version Raw CPE
kerio kerio_mailserver <= 6.3.0 cpe:2.3:a:kerio:kerio_mailserver:*:*:*:*:*:*:*:*
kerio kerio_mailserver 5.0 cpe:2.3:a:kerio:kerio_mailserver:5.0:*:*:*:*:*:*:*
kerio kerio_mailserver 5.1 cpe:2.3:a:kerio:kerio_mailserver:5.1:*:*:*:*:*:*:*
kerio kerio_mailserver 5.1.1 cpe:2.3:a:kerio:kerio_mailserver:5.1.1:*:*:*:*:*:*:*
kerio kerio_mailserver 5.6.3 cpe:2.3:a:kerio:kerio_mailserver:5.6.3:*:*:*:*:*:*:*
kerio kerio_mailserver 5.6.4 cpe:2.3:a:kerio:kerio_mailserver:5.6.4:*:*:*:*:*:*:*
kerio kerio_mailserver 5.6.5 cpe:2.3:a:kerio:kerio_mailserver:5.6.5:*:*:*:*:*:*:*
kerio kerio_mailserver 5.7.0 cpe:2.3:a:kerio:kerio_mailserver:5.7.0:*:*:*:*:*:*:*
kerio kerio_mailserver 5.7.1 cpe:2.3:a:kerio:kerio_mailserver:5.7.1:*:*:*:*:*:*:*
kerio kerio_mailserver 5.7.2 cpe:2.3:a:kerio:kerio_mailserver:5.7.2:*:*:*:*:*:*:*
kerio kerio_mailserver 5.7.3 cpe:2.3:a:kerio:kerio_mailserver:5.7.3:*:*:*:*:*:*:*
kerio kerio_mailserver 5.7.4 cpe:2.3:a:kerio:kerio_mailserver:5.7.4:*:*:*:*:*:*:*
kerio kerio_mailserver 5.7.5 cpe:2.3:a:kerio:kerio_mailserver:5.7.5:*:*:*:*:*:*:*
kerio kerio_mailserver 5.7.6 cpe:2.3:a:kerio:kerio_mailserver:5.7.6:*:*:*:*:*:*:*
kerio kerio_mailserver 5.7.7 cpe:2.3:a:kerio:kerio_mailserver:5.7.7:*:*:*:*:*:*:*
kerio kerio_mailserver 5.7.8 cpe:2.3:a:kerio:kerio_mailserver:5.7.8:*:*:*:*:*:*:*
kerio kerio_mailserver 5.7.9 cpe:2.3:a:kerio:kerio_mailserver:5.7.9:*:*:*:*:*:*:*
kerio kerio_mailserver 5.7.10 cpe:2.3:a:kerio:kerio_mailserver:5.7.10:*:*:*:*:*:*:*
kerio kerio_mailserver 6.0 cpe:2.3:a:kerio:kerio_mailserver:6.0:*:*:*:*:*:*:*
kerio kerio_mailserver 6.0.0 cpe:2.3:a:kerio:kerio_mailserver:6.0.0:*:*:*:*:*:*:*
kerio kerio_mailserver 6.0.1 cpe:2.3:a:kerio:kerio_mailserver:6.0.1:*:*:*:*:*:*:*
kerio kerio_mailserver 6.0.2 cpe:2.3:a:kerio:kerio_mailserver:6.0.2:*:*:*:*:*:*:*
kerio kerio_mailserver 6.0.3 cpe:2.3:a:kerio:kerio_mailserver:6.0.3:*:*:*:*:*:*:*
kerio kerio_mailserver 6.0.4 cpe:2.3:a:kerio:kerio_mailserver:6.0.4:*:*:*:*:*:*:*
kerio kerio_mailserver 6.0.5 cpe:2.3:a:kerio:kerio_mailserver:6.0.5:*:*:*:*:*:*:*
kerio kerio_mailserver 6.0.6 cpe:2.3:a:kerio:kerio_mailserver:6.0.6:*:*:*:*:*:*:*
kerio kerio_mailserver 6.0.7 cpe:2.3:a:kerio:kerio_mailserver:6.0.7:*:*:*:*:*:*:*
kerio kerio_mailserver 6.0.8 cpe:2.3:a:kerio:kerio_mailserver:6.0.8:*:*:*:*:*:*:*
kerio kerio_mailserver 6.1.3_patch_1 cpe:2.3:a:kerio:kerio_mailserver:6.1.3_patch_1:*:*:*:*:*:*:*

References for CVE-2006-6554

cvelogic Threat Intelligence