How severe is CVE-2018-16324?

CVE-2018-16324 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-16324 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16324?

CVE-2018-16324 affects Icewarp Mail Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-16324?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-16324 published?

CVE-2018-16324 was published on 2018-09-01 and last updated on 2026-06-17.

CVE-2018-16324

CVE-2018-16324 is a medium-severity vulnerability in Icewarp Mail Server with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Icewarp Mail Server
Published: 2018-09-01
Last modified: 2026-06-17

Description

In IceWarp Server 12.0.3.1 and before, there is XSS in the /webmail/ username field.

Frequently asked questions

What is CVE-2018-16324?: In IceWarp Server 12.0.3.1 and before, there is XSS in the /webmail/ username field.
How severe is CVE-2018-16324?: CVE-2018-16324 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-16324 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16324?: CVE-2018-16324 affects Icewarp Mail Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-16324?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-16324 published?: CVE-2018-16324 was published on 2018-09-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:icewarp:mail_server:*:*:*:*:*:*:*:*

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