How severe is CVE-2026-26314?

CVE-2026-26314 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 none, and availability high.

Is CVE-2026-26314 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-26314?

CVE-2026-26314 affects Ethereum Go Ethereum. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-26314?

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.

Does CVE-2026-26314 have an EU (EUVD) identifier?

Yes. CVE-2026-26314 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8437.

When was CVE-2026-26314 published?

CVE-2026-26314 was published on 2026-02-19 and last updated on 2026-06-17.

CVE-2026-26314

CVE-2026-26314 is a high-severity vulnerability in Ethereum Go Ethereum 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. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8437
Weakness: CWE-20
Affected product: Ethereum Go Ethereum
Published: 2026-02-19
Last modified: 2026-06-17

Description

go-ethereum (geth) is a golang execution layer implementation of the Ethereum protocol. Prior to version 1.16.9, a vulnerable node can be forced to shutdown/crash using a specially crafted message. The problem is resolved in the v1.16.9 and v1.17.0 releases of Geth.

Frequently asked questions

What is CVE-2026-26314?: go-ethereum (geth) is a golang execution layer implementation of the Ethereum protocol. Prior to version 1.16.9, a vulnerable node can be forced to shutdown/crash using a specially crafted message. The problem is resolved in the v1.16.9 and v1.17.0 releases of Geth.
How severe is CVE-2026-26314?: CVE-2026-26314 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 none, and availability high.
Is CVE-2026-26314 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-26314?: CVE-2026-26314 affects Ethereum Go Ethereum. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-26314?: 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.
Does CVE-2026-26314 have an EU (EUVD) identifier?: Yes. CVE-2026-26314 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8437.
When was CVE-2026-26314 published?: CVE-2026-26314 was published on 2026-02-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ethereum:go_ethereum:*:*:*:*:*:*:*:*

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