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CVE-2020-18684

31
FAUCET Score

CVE-2020-18684 describes an integer overflow vulnerability in Floodlight through version 1.2, specifically within the checkFlow function of StaticFlowEntryPusherResource.java, which can be triggered via manipulated priority or port numbers. This critical vulnerability (CVSS 9.8) is network-exploitable with low attack complexity, requiring no user interaction or privileges, and could lead to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation, nor publicly available exploit code in common frameworks, the vulnerability has garnered significant community discussion, indicating awareness and potential future interest.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.2CPE matchmatch criteria
cpe:2.3:a:atlassian:floodlight:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 53rd percentile among its peer group of 36,821 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

drive.google.com / open
ExploitThird Party Advisory