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CVE-2020-13820

26
FAUCET Score

CVE-2020-13820 describes an unauthenticated reflected Cross-Site Scripting (XSS) vulnerability in Extreme Management Center version 8.4.1.24, allowing an attacker to inject malicious scripts via a GET request parameter. With a CVSS score of 6.1 (Medium), this vulnerability requires user interaction (UI:R) but can be exploited remotely (AV:N) with low attack complexity (AC:L), potentially leading to information disclosure (C:L) and integrity compromise (I:L). While not actively exploited in the wild (KEV: No) and lacking Metasploit or ExploitDB entries, a Nuclei template exists for detection, and it has garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
8.4.1.24CPE matchmatch criteria
cpe:2.3:a:extremenetworks:extreme_management_center:8.4.1.24:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.01%
Probability of exploitation in next 30 days
EPSS Percentile
89.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2020-13820 · Sep 28, 2022
This CVE's current EPSS score of 0.0401 is in the 95th percentile among its peer group of 26,221 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

documentation.extremenetworks.com / release_notes/netsight/XMC_8.5.0_Release_Notes.pdf
Release NotesVendor Advisory
gtacknowledge.extremenetworks.com
Third Party Advisory
gtacknowledge.extremenetworks.com / articles/Solution/000051136
Third Party Advisory
medium.com / %400x00crash/xss-reflected-in-extreme-management-center-8-4-1-24-cve-2020-13820-c6febe951219