CVE-2026-2473CWE-340

Bucket Squatting in Vertex AI Experiments leads to RCE and Model Theft.

High · published February 20, 2026

CVSS v4.0
7.7
EPSS
1%
Percentile
42.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/U:Clear
EPSS
0.00512 · 42.8th percentile
Weakness
CWE-340 · Generation of Predictable Numbers or Identifiers
Published
2026-02-20T19:39Z
EPSS history
Timeline
  • 20 FEB 19:39Z
    Bucket Squatting in Vertex AI Experiments leads to RCE and Model Theft.
    cvelistv5