How severe is CVE-2020-13597?

CVE-2020-13597 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2020-13597 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-2020-13597?

CVE-2020-13597 primarily affects Projectcalico Calico. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-13597?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-13597 published?

CVE-2020-13597 was published on 2020-06-03 and last updated on 2026-06-17.

CVE-2020-13597

CVE-2020-13597 is a medium-severity vulnerability in Projectcalico Calico with a CVSS 3.x base score of 6.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 6.0)
CVSS v2: 2.1
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Projectcalico Calico
Published: 2020-06-03
Last modified: 2026-06-17

Description

Clusters using Calico (version 3.14.0 and below), Calico Enterprise (version 2.8.2 and below), may be vulnerable to information disclosure if IPv6 is enabled but unused. A compromised pod with sufficient privilege is able to reconfigure the node’s IPv6 interface due to the node accepting route advertisement by default, allowing the attacker to redirect full or partial network traffic from the node to the compromised pod.

Frequently asked questions

What is CVE-2020-13597?: Clusters using Calico (version 3.14.0 and below), Calico Enterprise (version 2.8.2 and below), may be vulnerable to information disclosure if IPv6 is enabled but unused. A compromised pod with sufficient privilege is able to reconfigure the node’s IPv6 interface due to the node accepting route advertisement by default, allowing the attacker to redirect full or partial network traffic from the node to the compromised pod.
How severe is CVE-2020-13597?: CVE-2020-13597 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2020-13597 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-2020-13597?: CVE-2020-13597 primarily affects Projectcalico Calico. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-13597?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-13597 published?: CVE-2020-13597 was published on 2020-06-03 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:projectcalico:calico:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:projectcalico:calico:*:*:*:*:*:*:*:*
cpe:2.3:a:projectcalico:calico:3.14.0:*:*:*:*:*:*:*

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