How severe is CVE-2020-36884?

CVE-2020-36884 has a CVSS 4.0 base score of 6.9, rated medium severity.

Is CVE-2020-36884 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2020-36884?

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

Does CVE-2020-36884 have an EU (EUVD) identifier?

Yes. CVE-2020-36884 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30845.

When was CVE-2020-36884 published?

CVE-2020-36884 was published on 2025-12-10 and last updated on 2026-06-17.

CVE-2020-36884

CVE-2020-36884 is a medium-severity vulnerability with a CVSS 4.0 base score of 6.9. 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-918.

Key facts

Severity: Medium (CVSS 4.0 base score 6.9)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-30845
Weakness: CWE-918
Published: 2025-12-10
Last modified: 2026-06-17

Description

BrightSign Digital Signage Diagnostic Web Server 8.2.26 and less contains an unauthenticated server-side request forgery vulnerability in the 'url' GET parameter of the Download Speed Test service. Attackers can specify external domains to bypass firewalls and perform network enumeration by forcing the application to make arbitrary HTTP requests to internal network hosts.

Frequently asked questions

What is CVE-2020-36884?: BrightSign Digital Signage Diagnostic Web Server 8.2.26 and less contains an unauthenticated server-side request forgery vulnerability in the 'url' GET parameter of the Download Speed Test service. Attackers can specify external domains to bypass firewalls and perform network enumeration by forcing the application to make arbitrary HTTP requests to internal network hosts.
How severe is CVE-2020-36884?: CVE-2020-36884 has a CVSS 4.0 base score of 6.9, rated medium severity.
Is CVE-2020-36884 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2020-36884?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2020-36884 have an EU (EUVD) identifier?: Yes. CVE-2020-36884 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30845.
When was CVE-2020-36884 published?: CVE-2020-36884 was published on 2025-12-10 and last updated on 2026-06-17.

References

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