Is CVE-2021-3396 in the CISA KEV catalog?

No. CVE-2021-3396 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3396?

CVE-2021-3396 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-3396?

CVE-2021-3396 has an EPSS score of 2.37% (82th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3396?

Upgrade meridian to 2020.1.5 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-3396

HIGHEPSS 82th pctl

8.8

CVSS v3

NVD

Description

OpenNMS Meridian 2016, 2017, 2018 before 2018.1.25, 2019 before 2019.1.16, and 2020 before 2020.1.5, Horizon 1.2 through 27.0.4, and Newts <1.5.3 has Incorrect Access Control, which allows local and remote code execution using JEXL expressions.

How to fix

Remediation Available

meridianNVD

Affected:>= 2020.1.0, < 2020.1.5Fixed in:2020.1.5CVE-2021-3396derived from NVD

newtsNVD

Affected:< 1.5.3Fixed in:1.5.3CVE-2021-3396derived 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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.37%probability of exploitation in 30 days

82ndpercentile

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

References

Vendor Advisory2

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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.