How severe is CVE-2020-6937?

CVE-2020-6937 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-6937 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-6937?

CVE-2020-6937 primarily affects Mulesoft Mule Runtime. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-6937?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-6937 published?

CVE-2020-6937 was published on 2020-05-29 and last updated on 2026-06-17.

CVE-2020-6937

CVE-2020-6937 is a high-severity vulnerability in Mulesoft Mule Runtime with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mulesoft Mule Runtime
Published: 2020-05-29
Last modified: 2026-06-17

Description

A Denial of Service vulnerability in MuleSoft Mule CE/EE 3.8.x, 3.9.x, and 4.x released before April 7, 2020, could allow remote attackers to submit data which can lead to resource exhaustion.

Frequently asked questions

What is CVE-2020-6937?: A Denial of Service vulnerability in MuleSoft Mule CE/EE 3.8.x, 3.9.x, and 4.x released before April 7, 2020, could allow remote attackers to submit data which can lead to resource exhaustion.
How severe is CVE-2020-6937?: CVE-2020-6937 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-6937 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-6937?: CVE-2020-6937 primarily affects Mulesoft Mule Runtime. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-6937?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-6937 published?: CVE-2020-6937 was published on 2020-05-29 and last updated on 2026-06-17.

References

https://help.salesforce.com/articleView?id=000353701&language=en_US&type=1&mode=1

Affected products (2)

cpe:2.3:a:mulesoft:mule_runtime:*:*:*:*:community:*:*:*
cpe:2.3:a:mulesoft:mule_runtime:*:*:*:*:enterprise:*:*:*

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