What is CVE-2015-6569?

CVE-2015-6569 is a medium-severity vulnerability in Atlassian Floodlight, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.9/10. Published 2018-02-21.

How severe is CVE-2015-6569?

Medium severity. CVSS v3 base score is 5.9 out of 10.

NULL pointer dereference in Atlassian Floodlight

CVE-2015-6569

Race condition in the LoadBalancer module in the Atlassian Floodlight Controller before 1.2 allows remote attackers to cause a denial of service (NULL pointer dereference and thread crash) via a state manipulation attack.

Vulnerability class: Race Condition

Published 2018-02-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.019 (78.5th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Atlassian Floodlight

Weakness classification (CWE)

References

floodlight.atlassian.net/wiki/spaces/floodlightcontroller/pages/24805419/Floodl… (Release Notes, Vendor Advisory)
github.com/floodlight/floodlight/pull/563 (Third Party Advisory, Issue Tracking)
www.securityfocus.com/bid/103132 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2015-6569?: CVE-2015-6569 is a medium-severity vulnerability in Atlassian Floodlight, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.9/10. Published 2018-02-21.
How severe is CVE-2015-6569?: Medium severity. CVSS v3 base score is 5.9 out of 10.