MEDIUM
CVE-2006-6554
NVD-CWE-noinfoPublished: December 14, 2006· Updated: Jun 16, 2026
5.0
CVSS v3.1
Official Description
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.
Technical Analysis
CVE-2006-6554 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityP
AV:N/AC:L/Au:N/C:N/I:N/A:P
Affected Vendors & Products
kerio1 product(s)
kerio mailserver
Source: NVD CPE · 29 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
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Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (10)
→
http://secunia.com/advisories/23364Patch · Vendor Advisory
→
http://www.vupen.com/english/advisories/2006/4993Vendor Advisory
→
http://secunia.com/advisories/23364Patch · Vendor Advisory
→
http://www.vupen.com/english/advisories/2006/4993Vendor Advisory
Quick Facts
CVE IDCVE-2006-6554
CVSS Score5.0 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedDec 14, 2006
Related CVEs (NVD-CWE-noinfo)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2006-6554 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.