CVE-2016-6496

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Summary

CVECVE-2016-6496
StatePUBLISHED
Assignerhpe
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-12-09 22:59:02 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe LDAP directory connector in Atlassian Crowd before 2.8.8 and 2.9.x before 2.9.5 allows remote attackers to execute arbitrary code via an LDAP attribute with a crafted serialized Java object, aka LDAP entry poisoning.

Risk And Classification

Primary CVSS: v3.0 9.8 CRITICAL from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.029120000 probability, percentile 0.864680000 (date 2026-05-10)

Problem Types: CWE-20 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary9.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:L/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Atlassian Crowd 2.9.0 All All All
Application Atlassian Crowd 2.9.1 All All All
Application Atlassian Crowd All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
[CWD-4790] CVE-2016-6496: LDAP Java Object Injection in Crowd - Atlassian JIRA af854a3a-2127-422b-91ae-364da2661108 jira.atlassian.com Issue Tracking
Atlassian Crowd CVE-2016-6496 LDAP Injection Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Crowd Security Advisory 2016-10-19 - Atlassian Documentation af854a3a-2127-422b-91ae-364da2661108 confluence.atlassian.com Vendor Advisory
SecurityFocus af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
www.blackhat.com/docs/us-16/materials/us-16-Munoz-A-Journey-From-JNDI-LDAP-Man... af854a3a-2127-422b-91ae-364da2661108 www.blackhat.com Not Applicable
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