How severe is CVE-2026-2473?

CVE-2026-2473 has a CVSS 4.0 base score of 7.7, rated high severity.

Is CVE-2026-2473 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-2473?

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-2026-2473 have an EU (EUVD) identifier?

Yes. CVE-2026-2473 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7506.

When was CVE-2026-2473 published?

CVE-2026-2473 was published on 2026-02-20 and last updated on 2026-06-17.

CVE-2026-2473

CVE-2026-2473 is a high-severity vulnerability with a CVSS 4.0 base score of 7.7. 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-340.

Key facts

Severity: High (CVSS 4.0 base score 7.7)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7506
Weakness: CWE-340
Published: 2026-02-20
Last modified: 2026-06-17

Description

Predictable bucket naming in Vertex AI Experiments in Google Cloud Vertex AI from version 1.21.0 up to (but not including) 1.133.0 on Google Cloud Platform allows an unauthenticated remote attacker to achieve cross-tenant remote code execution, model theft, and poisoning via pre-creating predictably named Cloud Storage buckets (Bucket Squatting). This vulnerability was patched and no customer action is needed.

Frequently asked questions

What is CVE-2026-2473?: Predictable bucket naming in Vertex AI Experiments in Google Cloud Vertex AI from version 1.21.0 up to (but not including) 1.133.0 on Google Cloud Platform allows an unauthenticated remote attacker to achieve cross-tenant remote code execution, model theft, and poisoning via pre-creating predictably named Cloud Storage buckets (Bucket Squatting). This vulnerability was patched and no customer action is needed.
How severe is CVE-2026-2473?: CVE-2026-2473 has a CVSS 4.0 base score of 7.7, rated high severity.
Is CVE-2026-2473 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-2473?: 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-2026-2473 have an EU (EUVD) identifier?: Yes. CVE-2026-2473 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7506.
When was CVE-2026-2473 published?: CVE-2026-2473 was published on 2026-02-20 and last updated on 2026-06-17.

References

https://docs.cloud.google.com/support/bulletins#gcp-2026-012

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