What’s Vulnerable › Vulnerabilities

CVE-2026-57476: Deloitte AI Assist for Customer unauthenticated RAG corpus read and write

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-10 · updated 2026-10-25
• Weakness: CWE-306

Description

Deloitte AI Assist for Customer exposed unauthenticated API endpoints that allowed an attacker with knowledge of additional parameters to read from or inject content into the retrieval-augmented generation (RAG) corpus. On 2026-03-25, AI Assist for Customer restricted network access and enforced authentication for the previously exposed endpoints.

Affected products

• Deloitte AI Assist for Customer: before 2026-03-25 — fixed in 2026-03-25

How to fix

Upgrade to a fixed version: Deloitte AI Assist for Customer 2026-03-25. Check the vendor advisory for mitigations.

References

• https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-191-01.json
• https://www.cve.org/CVERecord?id=CVE-2026-57476
• https://zerotolerance.me/advisories/assets/VU487875-deloitte-ascend-advisory.pdf
• https://zerotolerance.me/advisories/deloitte-aiassist-ascend-2026-vu487875/

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