Medium severity6.1NVD Advisory· Published Jul 20, 2021· Updated Jun 17, 2026
CVE-2020-25205
CVE-2020-25205
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.
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Affected products
7- Mimosa/B5, B5c, and C5x firmwaredescription
Patches
Vulnerability mechanics
References
2- labs.f-secure.com/advisories/mimosa-ptp-devices-multiple-vulnerabilities/nvdExploitThird Party Advisory
- labs.f-secure.com/advisories/nvdThird Party Advisory
News mentions
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