CVE-2026-85299 Google Compute Engine - Broken Access Control

Google Compute Engine < 2026-08-31 contains a missing authorization vulnerability in disks.createSnapshot and regionDisks.createSnapshot APIs, letting authenticated attackers exfiltrate cross-project disk data, exploit requires authentication.

CVSS base score 8.3 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.26% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Information Disclosure
CVSS vector
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear
Published
27 October 2026
Updated
29 October 2026
Weakness
CWE-862

Vendor fix

Update to version 2026-08-31 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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