CVE-2020-25205

MEDIUM
6.1
CVSS Score
Published: July 20, 2021 at 06:45 PM UTC
Updated: June 17, 2026 at 03:06 AM UTC
6 products affected across 1 vendorB5 FirmwareC5C FirmwareB5C Firmware

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.9%

Description

The web console for Mimosa B5, B5c, and C5x firmware through 2.8.0.2 is vulnerable to stored XSS in the set_banner() function of /var/www/core/controller/index.php. An unauthenticated attacker may set the contents of the /mnt/jffs2/banner.txt file, stored on the device's filesystem, to contain arbitrary JavaScript. The file contents are then used as part of a welcome/banner message presented to unauthenticated users who visit the login page for the web console. This vulnerability does not occur in the older 1.5.x firmware versions.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 2.8.0.3
mimosa-b5 (same device)
v ≤ 2.8.0.3
mimosa-b5c (same device)
v ≤ 2.8.0.3
mimosa-c5c (same device)
80%
All versions
80%
All versions
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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