CVE-2016-6496

critical
Published 2016-12-09 · Modified 2026-05-06
CVSS v3
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2
7.5
VIR risk
9.8

Description

The 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.

Predictions

Exploit likelihood
97%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: security-alert@hpe.com — https://confluence.atlassian.com/crowd/crowd-security-advisory-2016-10-19-856697283.html

Application impact

VendorProductVersionsFixed
atlassiancrowd{"endIncluding":"2.8.4"}
atlassiancrowd2.9.0
atlassiancrowd2.9.1

References

CWEs

CWE-20

Verify integrity in audit chain (admin only). AS-IS.