How severe is CVE-2020-13819?

CVE-2020-13819 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-2020-13819 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13819?

CVE-2020-13819 affects Extremenetworks Extreme Management Center. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13819?

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

When was CVE-2020-13819 published?

CVE-2020-13819 was published on 2020-08-05 and last updated on 2026-06-17.

CVE-2020-13819

CVE-2020-13819 is a medium-severity vulnerability in Extremenetworks Extreme Management Center 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% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Extremenetworks Extreme Management Center
Published: 2020-08-05
Last modified: 2026-06-17

Description

Extreme EAC Appliance 8.4.1.24 allows unauthenticated reflected XSS via a parameter in a GET request.

Frequently asked questions

What is CVE-2020-13819?: Extreme EAC Appliance 8.4.1.24 allows unauthenticated reflected XSS via a parameter in a GET request.
How severe is CVE-2020-13819?: CVE-2020-13819 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-2020-13819 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13819?: CVE-2020-13819 affects Extremenetworks Extreme Management Center. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13819?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-13819 published?: CVE-2020-13819 was published on 2020-08-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:extremenetworks:extreme_management_center:*:*:*:*:*:*:*:*

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