CVE-2020-21884

Exp

Unibox SMB 2.4 and UniBox Enterprise Series 2.4 and UniBox Campus Series 2.4 contain a cross-site request forgery (CSRF) vulnerability in /tools/network-trace, /list_users, /list_byod?usertype=raduser, /dhcp_leases, /go?rid=202 in which a specially crafted HTTP request may reconfigure the device.

Published: 2021-04-09 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-21884 is rated High Exploit Risk (74.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.68%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-21884

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-21884

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.80% 0.68% -0.12%
2 2025-11-18 0.68% 0.80% +0.12%
3 2025-03-30 — 0.68% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-21884

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2020-21884

Affected software / configurations for CVE-2020-21884

Vendor Product Version Raw CPE
indionetworks unibox_u50_firmware 2.4 cpe:2.3:o:indionetworks:unibox_u50_firmware:2.4:*:*:*:*:*:*:*
indionetworks unibox_u500_firmware 2.4 cpe:2.3:o:indionetworks:unibox_u500_firmware:2.4:*:*:*:*:*:*:*
indionetworks unibox_u1000_firmware 2.4 cpe:2.3:o:indionetworks:unibox_u1000_firmware:2.4:*:*:*:*:*:*:*
indionetworks unibox_u2500_firmware 2.4 cpe:2.3:o:indionetworks:unibox_u2500_firmware:2.4:*:*:*:*:*:*:*
indionetworks unibox_u5000_firmware 2.4 cpe:2.3:o:indionetworks:unibox_u5000_firmware:2.4:*:*:*:*:*:*:*

References for CVE-2020-21884

cvelogic Threat Intelligence