CVE-2020-18724

Mdaemon Webmail vulnerability

CVSS

5.4

EPSS

3.2%

EPSS pct

87th

Exploited

No known

Authenticated stored cross-site scripting (XSS) in the contact name field in the distribution list of MDaemon webmail 19.5.5 allows an attacker to executes code and perform a XSS attack while opening a contact list.

Affected vendor

Altn

Affected product

Mdaemon Webmail

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2021-02-03

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 3.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2020-18724

Confirm whether Altn Mdaemon Webmail is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2020-18724.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-18724

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-18724 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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