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CVE-2016-2564

Published: Apr 23, 2017Updated: May 13, 2026 Sources: CVE List NVDCWE-331
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
1.3%
Top 33.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Invision Power Services (IPS) Community Suite before 4.1.9 makes session hijack easier by relying on the PHP uniqid function without the more_entropy flag. Attackers can guess an Invision Power Board session cookie if they can predict the exact time of cookie generation.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-331

Affected Products

invision power boardinvisioncommunity
SaaS
Web & CMS Plugins / forum-wiki
n/an/a
invisioncommunitycommercialWeb & CMS Pluginsaka invision power board, ips community suite, invisioncommunity

Exploitability

Official Patch Available

References

https://invisionpower.com/release-notes/419-r37/
invisionpower.com
https://medium.com/%40iancarroll/bypassing-authentication-in-invision-power-board-with-cve-2016-2564-9a24ea3655f9
medium.com

Timeline

Published
Apr 23, 2017
Last Updated
May 13, 2026

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