{"id":"CVE-2020-25205","aliases":["EUVD-2020-17895","GHSA-w338-c5qq-hv3p"],"status":"published","title":"The web console for Mimosa B5, B5c, and C5x firmware through 2.8.0.2 is vulnerable to stored XSS...","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.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00905,"percentile":0.60073,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-07-20T18:45:21Z","modified":"2026-06-17T03:06:34Z","products":[{"vendor":"mimosa","product":"b5_firmware"},{"vendor":"mimosa","product":"b5c_firmware"},{"vendor":"mimosa","product":"c5c_firmware"}],"references":[{"url":"https://labs.f-secure.com/advisories/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://labs.f-secure.com/advisories/mimosa-ptp-devices-multiple-vulnerabilities/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25205"},{"url":"https://github.com/advisories/GHSA-w338-c5qq-hv3p"}],"sources":{"cve":[{"id":"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.","status":"published","published":"2021-07-20T18:45:21Z","modified":"2024-08-04T15:33:04.419Z","updated_at":"2026-11-02T14:35:48.52216Z"}],"euvd":[{"id":"EUVD-2020-17895","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.","status":"published","published":"2021-07-20T18:45:21Z","modified":"2024-08-04T15:33:04Z","updated_at":"2026-11-03T03:07:18.192905Z"}],"ghsa":[{"id":"GHSA-w338-c5qq-hv3p","title":"The web console for Mimosa B5, B5c, and C5x firmware through 2.8.0.2 is vulnerable to stored XSS...","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.","status":"published","published":"2022-05-24T19:08:27Z","modified":"2023-01-30T05:00:52Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:17.249643Z"}],"nvd":[{"id":"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.","status":"published","published":"2021-07-20T19:15:09.563Z","modified":"2026-06-17T03:06:34.763Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:44.292752Z"}]}}