CVE-2026-85299: A Missing Authorization vulnerability in the disks.createSnapshot and regionDisks.createSnapshot APIs in Googl

Routine

HIGH 8.3

CVE-2026-85299 is a high-severity flaw (CVSS 8.3) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	n/a
CISA exploited list	No
Weakness	CWE-862
Published	2026-10-27
Last modified	2026-10-27

Publisher (CNA): GoogleCloud

Last updated 2026-10-27 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-10-27 10:16 UTCPublished CVE record published
2026-10-27 10:16 UTCUpdated Record last modified

Advisories and coverage

Official advisories

Google Cloud Security Bulletins: GCP-2026-073 2026-10-26

Research and news

Vulners Bulletins: CVE-2026-85299 Missing Authorization in Compute Engine allows Cross-Project Disk Exfiltration 2026-10-27
Vulners Bulletins: CVE-2026-85299 Missing Authorization in Compute Engine allows Cross-Project Disk Exfiltration 2026-10-27

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-85299?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-85299 being exploited?

CVE-2026-85299 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-85299 affect?

CVE-2026-85299 affects affected software. Severity is high (CVSS 8.3). 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-projec

How urgent is CVE-2026-85299?

Priority 29/100. High severity

Software pages

Google Cloud vulnerabilities

References

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