Is CVE-2020-13920 in the CISA KEV catalog?

No. CVE-2020-13920 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-13920?

CVE-2020-13920 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2020-13920?

CVE-2020-13920 has an EPSS score of 4.56% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-13920?

Upgrade activemq on debian 11 to 5.16.0-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-13920

MEDIUMEPSS 90th pctl

5.9

CVSS v3

NVD

Description

Apache ActiveMQ uses LocateRegistry.createRegistry() to create the JMX RMI registry and binds the server to the "jmxrmi" entry. It is possible to connect to the registry without authentication and call the rebind method to rebind jmxrmi to something else. If an attacker creates another server to proxy the original, and bound that, he effectively becomes a man in the middle and is able to intercept the credentials when an user connects. Upgrade to Apache ActiveMQ 5.15.12.

CWE-306Missing Authentication for Critical Function

How to fix

Remediation Available

activemqDebian

Fixed in:5.16.0-1CVE-2020-13920

activemqUbuntu

Fixed in:5.13.2+dfsg-2ubuntu0.1~esm1USN-6910-1

Fixed in:5.15.8-2~18.04.1~esm1USN-6910-1

Fixed in:5.15.11-1ubuntu0.1~esm1USN-6910-1

Fixed in:5.16.1-1ubuntu0.1~esm1USN-6910-1

libactivemq-javaUbuntu

Fixed in:5.13.2+dfsg-2ubuntu0.1~esm1USN-6910-1

Fixed in:5.15.8-2~18.04.1~esm1USN-6910-1

Fixed in:5.15.11-1ubuntu0.1~esm1USN-6910-1

Fixed in:5.16.1-1ubuntu0.1~esm1USN-6910-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

4.56%probability of exploitation in 30 days

90thpercentile

High risk: more likely to be exploited than 90% of all known CVEs.

References

Vendor Advisory1

activemq.apache.org

Third-Party Advisory2

Other references3

Related Vulnerabilities

Other CWE-306 (Missing Authentication for Critical Function) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-10271	High	7.5	100%	KEV + Ransom	-
CVE-2023-42793	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2025-3248	Critical	9.8	100%	KEV	Fix
CVE-2022-1388	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2021-37415	Critical	9.8	100%	KEV	-
CVE-2023-21839	High	7.5	100%	KEV	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.