5.9

CVE-2016-2564: invisioncommunity invision_power_board Insufficient Entropy

CVSS: 5.9v3.0MediumModified
Published 23-04-2017Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2016-2564 is a medium (CVSS 5.9) Insufficient Entropy vulnerability in invisioncommunity invision_power_board. EPSS estimates a 1.27% chance of exploitation in the next 30 days, higher than 69.6% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
5.9/10
010
Medium · v3.0 (NVD)
EPSS score
1.27%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 23-04-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

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 metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.27%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

+0.01 pp

From 1.26% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.27%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Invisioncommunity1 product

1 vendor · 1 product

References

2 links