CVE-2026-85299 | BDVDB-2026-396255 Detail

Google CloudCompute Engine

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.

Impact#

CAPEC-122 (CAPEC-122 Privilege Abuse)

Weaknesses#

CWE-862 Missing Authorization

References#

https://docs.cloud.google.com/compute/docs/security-bulletins#gcp-2026-073

Exploit#

No public exploit known

History#

Version 12026-10-27Record published in the CVE List.
Version 22026-11-04Most recent update recorded in the CVE List.

Published

Published: 2026-10-27
Last modified: 2026-11-04

Vendor information

Vendor: Google Cloud
Product: Compute Engine

All Google Cloud vulnerabilities

Score

8.3 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 17.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Missing Authorization

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 2026-08-31
Fixed
2026-08-31

Scoring System

CVSS v4.0

8.3 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Attack Requirements	None
Privileges Required	Low
User Interaction	None
Vulnerable System Confidentiality	High
Vulnerable System Integrity	None
Vulnerable System Availability	None
Subsequent System Confidentiality	High
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).