MEDIUM
CVE-2009-1093
CWE-16Published: March 25, 2009· Updated: Jun 16, 2026
5.0
CVSS v3.1
Official Description
LdapCtx in the LDAP service in Java SE Development Kit (JDK) and Java Runtime Environment (JRE) 5.0 Update 17 and earlier; 6 Update 12 and earlier; SDK and JRE 1.3.1_24 and earlier; and 1.4.2_19 and earlier does not close the connection when initialization fails, which allows remote attackers to cause a denial of service (LDAP service hang).
Technical Analysis
CVE-2009-1093 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
sun3 product(s)
jdkjresdk
Source: NVD CPE · 97 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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Rapid7 / Metasploit
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Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories
All References (84)
Quick Facts
CVE IDCVE-2009-1093
CVSS Score5.0 / 10
SeverityMEDIUM
WeaknessCWE-16
CISA KEVNo
Affected1 vendor(s)
PublishedMar 25, 2009
Related CVEs (CWE-16)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2009-1093 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. CVE data is provided under the NVD usage policy.