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CVE-2026-85299— Missing Authorization in Compute Engine allows Cross-Project Disk Exfiltration

Quick assessment

Affected
Google Cloud Compute Engine
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Google Cloud Platform 上，Google Compute Engine（GCE）2026 年 8 月 31 日之前版本的 和 API 存在一个缺少授权（Missing Authorization）的漏洞。该漏洞允许已认证的攻击者窃取跨项目的磁盘数据。 该漏洞已于 2026 年 8 月 31 日修复，无需客户采取任何操作。

CVSS 8.3 · High EPSS 0.35% · P29

Affected Version Matrix 1

VendorProduct Version RangeStatus
Google Cloud Compute Engine < 2026-08-31 affected
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I. Basic Information for CVE-2026-85299

Vulnerability Information
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Vulnerability Title
Missing Authorization in Compute Engine allows Cross-Project Disk Exfiltration
Source: CVE Program / CVE List V5
Vulnerability Description
A Missing Authorization vulnerability in the disks.createSnapshot and regionDisks.createSnapshot APIs in Google Compute Engine versions prior to 2026-08-31 on Google Cloud Platform allows an authenticated attacker to exfiltrate cross-project disk data. This vulnerability was patched on 31 August 2026, and no customer action is needed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/U:Clear
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Google Cloud Compute Engine 0 ~ 2026-08-31 -

II. Public POCs for CVE-2026-85299

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III. Intelligence Information for CVE-2026-85299

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Other References for CVE-2026-85299 (1)

IV. Related Vulnerabilities

Same vendor: Google Cloud
Same weakness: CWE-862