Is CVE-2021-31407 in the CISA KEV catalog?

No. CVE-2021-31407 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-31407?

CVE-2021-31407 has a CVSS v3 base score of 8.6 (HIGH).

What is the EPSS score for CVE-2021-31407?

CVE-2021-31407 has an EPSS score of 2.38% (82th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-31407?

Upgrade flow to 6.0.2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-31407

HIGHEPSS 82th pctl

8.6

CVSS v3

NVD

Description

Vulnerability in OSGi integration in com.vaadin:flow-server versions 1.2.0 through 2.4.7 (Vaadin 12.0.0 through 14.4.9), and 6.0.0 through 6.0.1 (Vaadin 19.0.0) allows attacker to access application classes and resources on the server via crafted HTTP request.

CWE-402 CWE-668

How to fix

Remediation Available

flowNVD

Affected:>= 6.0.0, < 6.0.2Fixed in:6.0.2CVE-2021-31407derived from NVD

vaadinNVD

Affected:>= 12.0.0, < 14.4.10Fixed in:14.4.10CVE-2021-31407derived from NVD

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 ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

2.38%probability of exploitation in 30 days

82ndpercentile

Elevated risk: more likely to be exploited than 82% of all known CVEs.

References

Patch3

Vendor Advisory1

vaadin.com

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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.