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CVE-2020-21884

24
FAUCET Score

CVE-2020-21884 describes a Cross-Site Request Forgery (CSRF) vulnerability in Indionetworks Unibox SMB, Enterprise, and Campus Series 2.4 devices, specifically within several administrative endpoints. This high-severity vulnerability (CVSS 8.8) allows an unauthenticated attacker to reconfigure affected devices if a logged-in user is tricked into clicking a malicious link. While the potential impact is significant, including complete compromise of confidentiality, integrity, and availability, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.4CPE matchmatch criteria
cpe:2.3:o:indionetworks:unibox_u50_firmware:2.4:*:*:*:*:*:*:*
2.4CPE matchmatch criteria
cpe:2.3:o:indionetworks:unibox_u500_firmware:2.4:*:*:*:*:*:*:*
2.4CPE matchmatch criteria
cpe:2.3:o:indionetworks:unibox_u1000_firmware:2.4:*:*:*:*:*:*:*
2.4CPE matchmatch criteria
cpe:2.3:o:indionetworks:unibox_u2500_firmware:2.4:*:*:*:*:*:*:*
2.4CPE matchmatch criteria
cpe:2.3:o:indionetworks:unibox_u5000_firmware:2.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.14%
Probability of exploitation in next 30 days
EPSS Percentile
63.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0114 is in the 62nd percentile among its peer group of 14,852 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

mail-archive.com / fulldisclosure%40seclists.org/msg07139.html
s3curityb3ast.github.io / KSA-Dev-008.txt
ExploitThird Party Advisory
mail-archive.com / [email protected]/msg07139.html