CVE-2018-11628

Ems Master Calendar vulnerability

CVSS

6.1

EPSS

3.5%

EPSS pct

88th

Exploited

No known

Data input into EMS Master Calendar before 8.0.0.201805210 via URL parameters is not properly sanitized, allowing malicious attackers to send a crafted URL for XSS.

Affected vendor

Emssoftware

Affected product

Ems Master Calendar

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2018-06-01

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 3.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2018-11628

Confirm whether Emssoftware Ems Master Calendar is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-11628.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-11628

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-11628 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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