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Azure AI Foundry EUVDEUVD-2026-82594

| CVE-2026-85917 HIGH
Server-Side Request Forgery (SSRF) (CWE-918)
2026-09-17 secure@microsoft.com GHSA-6v72-f7jh-hj5v
7.5
CVSS 3.1 · Vendor: microsoft
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach Azure AI Foundry endpoint over network
  2. Delivery
    Submit crafted attacker-controlled URL parameter
  3. Exploit
    Service performs server-side request to internal target
  4. Execution
    Internal/metadata response returned to attacker
  5. Impact
    Sensitive internal data disclosed

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V4 - API and Web Service URL allowlisting, SSRF prevention
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Credential Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

No special conditions - remote unauthenticated exploitation over the network against Azure AI Foundry (AV:N/AC:L/PR:N/UI:N). Exploitation requires the attacker to reach an Azure AI Foundry feature that fetches an attacker-influenced URL server-side. The primary limiting factor is that this is a Microsoft-operated cloud service: the fix is applied server-side by Microsoft with no customer action, so the exposure window is bounded by Microsoft's remediation timeline rather than by customer patching, and impact is confined to confidentiality (no integrity or availability effect, no scope change to other systems).

Impact

The vendor CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, 7.5 High) describes a remotely reachable, low-complexity, unauthenticated SSRF whose only impact is high confidentiality loss - integrity and availability are both N and scope is Unchanged. Note a labeling conflict: the description says the flaw lets an attacker 'elevate privileges,' but the CVSS impact metrics (C:H/I:N/A:N, S:U) describe pure information disclosure, not privilege elevation - this is Microsoft MSRC boilerplate phrasing and the vector, not the prose, should drive prioritization. No EPSS score, no CISA KEV listing, and no public exploit are present in the input: exploitation status is 'no public exploit identified at time of analysis.' There is no SSVC decision data supplied. Because Azure AI Foundry is a Microsoft-operated cloud service, the fix is almost certainly server-side and already applied for all tenants, which materially lowers real-world customer action risk even though the raw score is High. Net: a genuine but self-remediating SSRF-driven disclosure issue - real severity, low residual customer exposure once Microsoft ships the fix.

Exploit ScenarioDerived

An unauthenticated remote attacker sends a crafted request to an Azure AI Foundry endpoint that fetches a user-supplied URL, coercing the service into making server-side requests to internal Azure resources or the instance metadata endpoint and returning the response, disclosing sensitive internal data. No authentication or user interaction is required (PR:N/UI:N) and complexity is low (AC:L). No public proof-of-concept is identified at time of analysis.

Monitor Track and reassess. Why: Vendor states no customer action required.
No patch listed yet 0.6% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 17, 2026

Server-side request forgery in Azure AI Foundry allows remote unauthenticated attackers to cause high confidentiality loss by making the service fetch attacker-controlled URLs. Microsoft applies the fix server-side, requiring no customer action, and no public exploit has been identified at time of analysis.

RemediationAI

Microsoft addresses this vulnerability server-side; no customer action is required. Patch available per vendor advisory. Users should monitor the MSRC advisory for confirmation of remediation. No workarounds are necessary as the fix is applied automatically. Organizations using Azure AI Foundry should ensure that any custom URL-fetching features they have built on top of the service validate and restrict outbound requests, but the core service is patched by Microsoft. For the most current guidance, consult the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85917.

Affected VersionsENISA

Azure AI Foundry - (version not specified)

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Server-Side Request Forgery (SSRF) in Azure AI Foundry (CWE-918) occurs when the application fetches a remote resource without validating the user-supplied URL, allowing an attacker to coerce the server into making requests to arbitrary internal or external systems. This can lead to unauthorized access to sensitive information, such as cloud metadata endpoints or internal services. The vulnerability is remotely exploitable without authentication (AV:N/AC:L/PR:N/UI:N) and results in high confidentiality impact only, with no integrity or availability impact. The affected component is a feature within Azure AI Foundry that processes URLs server-side.

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Severity by source

Vendor (microsoft) PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
vuln.today AI 7.5 HIGH

Unauthenticated network-reachable SSRF (AV:N/AC:L/PR:N/UI:N) yielding internal-data disclosure only; impact is confidentiality-high with no integrity/availability effect and no scope change (S:U).

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

DescriptionCVE.org

Server-side request forgery (ssrf) in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.

Executive ViewAI

Why It Matters

A server-side request forgery flaw in Microsoft's Azure AI Foundry service (CVE-2026-85917, CVSS 7.5) could allow attackers to make the platform fetch attacker-controlled URLs, exposing sensitive data processed or held within customer AI workloads. Because this is a Microsoft-operated cloud service, the exposure is not something the organization can fix on its own - remediation sits with the vendor, and leadership should care primarily about what data in our AI Foundry environments could have been read by an unauthorized party and whether regulated or confidential information was in scope. No public exploit has been identified at time of analysis, but the vulnerability is rated HIGH for confidentiality loss and exploitation is a matter of vendor-side timing rather than our patch cycle.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis; the advisory context indicates Microsoft remediates server-side with no customer action required. Interim mitigations: restrict outbound network egress for Azure AI Foundry workloads using allowlisting, firewall/NSG rules, and private endpoints; disable or constrain user-, prompt-, and model-supplied URL fetching (web grounding, connectors, custom tools/actions); monitor egress and service logs for requests to unknown external destinations; rotate credentials and connection strings reachable by the affected workloads; obtain written confirmation from Microsoft that the server-side fix covers the subscription and regions in use.

Threat Intelligence Overview

EPSS Score
0.6%
Top 55% exploitable
Prevalence
High
Microsoft's flagship hosted AI development platform, broadly available cloud service
Vendor Status
Publicly Disclosed:No
Exploited:No
Latest Software Release:N/A
Service Type
Hosted
Vendor-managed, no client patch needed
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.6%
Patch available No
Active threat No
Deciding rule
Vendor states no customer action required
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
High
Technical Impact
Partial

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.

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