How severe is CVE-2020-27337?

CVE-2020-27337 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2020-27337 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-27337?

CVE-2020-27337 affects Treck Ipv6. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-27337?

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-2020-27337 published?

CVE-2020-27337 was published on 2020-12-22 and last updated on 2026-06-17.

CVE-2020-27337

CVE-2020-27337 is a high-severity vulnerability in Treck Ipv6 with a CVSS 3.x base score of 7.3. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Treck Ipv6
Published: 2020-12-22
Last modified: 2026-06-17

Description

An issue was discovered in Treck IPv6 before 6.0.1.68. Improper Input Validation in the IPv6 component allows an unauthenticated remote attacker to cause an Out of Bounds Write, and possibly a Denial of Service via network access.

Frequently asked questions

What is CVE-2020-27337?: An issue was discovered in Treck IPv6 before 6.0.1.68. Improper Input Validation in the IPv6 component allows an unauthenticated remote attacker to cause an Out of Bounds Write, and possibly a Denial of Service via network access.
How severe is CVE-2020-27337?: CVE-2020-27337 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2020-27337 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-27337?: CVE-2020-27337 affects Treck Ipv6. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-27337?: 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-2020-27337 published?: CVE-2020-27337 was published on 2020-12-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:treck:ipv6:*:*:*:*:*:*:*:*

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CVE-2020-27338 — Medium (CVSS 5.9): An issue was discovered in Treck IPv6 before 6.0.1.68. Improper Input Validation in the DHCPv6 client component allows…
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