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Cloud

CVE-2026-9152

10.0
Critical
EPSS 0.34%May 21, 2026

Unauthenticated access to Altium 365 SearchService exposes workspace search indices.

common questions

Is CVE-2026-9152 being exploited?

Not confirmed. CVE-2026-9152 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.34% probability of exploitation in the next 30 days.

How severe is CVE-2026-9152?

CVE-2026-9152 is rated Critical with a CVSS score of 10.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2026-9152?

Not known from our data. No patch reference has been recorded for CVE-2026-9152, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.

What does CVE-2026-9152 affect?

CVE-2026-9152 affects Altium 365 cloud deployments. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2026-9152?

Disable unauthenticated access; enforce authentication on index ops; monitor.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
Altium 365 cloud deployments
impact

Read indexed workspace data and can inject/modify/delete index entries across tenants; compromises privacy and search integrity.

action required

Immediate action required

how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
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