How severe is CVE-2020-35209?

CVE-2020-35209 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 high, and availability none.

Is CVE-2020-35209 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35209?

CVE-2020-35209 affects Atomix. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35209?

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-2020-35209 published?

CVE-2020-35209 was published on 2021-12-16 and last updated on 2026-06-17.

CVE-2020-35209

CVE-2020-35209 is a high-severity vulnerability in Atomix 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% (55th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Atomix
Published: 2021-12-16
Last modified: 2026-06-17

Description

An issue in Atomix v3.1.5 allows unauthorized Atomix nodes to join a target cluster via providing configuration information.

Frequently asked questions

What is CVE-2020-35209?: An issue in Atomix v3.1.5 allows unauthorized Atomix nodes to join a target cluster via providing configuration information.
How severe is CVE-2020-35209?: CVE-2020-35209 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 high, and availability none.
Is CVE-2020-35209 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35209?: CVE-2020-35209 affects Atomix. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35209?: 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-2020-35209 published?: CVE-2020-35209 was published on 2021-12-16 and last updated on 2026-06-17.

References

https://docs.google.com/presentation/d/1W5KU7ffh4dheR8iD54ulABImi6byAhSI-OhEKw2adRo/edit?usp=sharing

Affected products (1)

cpe:2.3:a:atomix:atomix:*:*:*:*:*:*:*:*

More vulnerabilities in Atomix

CVE-2020-35214 — High (CVSS 8.1): An issue in Atomix v3.1.5 allows a malicious Atomix node to remove states of ONOS storage via abuse of primitive…
CVE-2020-35213 — High (CVSS 8.1): An issue in Atomix v3.1.5 allows attackers to cause a denial of service (DoS) via false link event messages sent to a…
CVE-2020-35211 — High (CVSS 7.5): An issue in Atomix v3.1.5 allows unauthorized Atomix nodes to become the lead node in a target cluster via manipulation…
CVE-2020-35215 — Medium (CVSS 6.5): An issue in Atomix v3.1.5 allows attackers to access sensitive information when a malicious Atomix node queries…
CVE-2020-35210 — Medium (CVSS 6.5): A vulnerability in Atomix v3.1.5 allows attackers to cause a denial of service (DoS) via a Raft session flooding attack…
CVE-2020-35216 — Medium (CVSS 5.9): An issue in Atomix v3.1.5 allows attackers to cause a denial of service (DoS) via false member down event messages.

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