An XSS issue was discovered in
MDaemon Email Server before version 24.5.1c. An attacker can send an HTML e-mail message
with
JavaScript in an img tag. This could
allow a remote attacker
to load arbitrary JavaScript code in the context of a webmail user's browser window.
CISA SSVCTrack at low, Attend at medium and Act at high mission impact.
No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact, and watch the vendor's advisory for the fix.
Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table