What is the CVSS score of CVE-2026-21532?

CVE-2026-21532 has a CVSS 3.1 base score of 8.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of Azure are affected by CVE-2026-21532?

CVE-2026-21532 is a HIGH severity vulnerability affecting Azure Function deployments that could expose sensitive information to unauthorized users.. A patch is available.

How to fix or mitigate CVE-2026-21532?

Within 24 hours: Inventory all Azure Functions in your environment and assess which handle sensitive data; enable diagnostic logging to detect exploitation attempts. Within 7 days: Implement network segmentation and WAF rules to restrict Azure Function access to authorized users only; conduct code review of custom authentication mechanisms. Within 30 days: Establish communication with Microsoft for patch timeline; develop and test a deployment plan for immediate patching upon availability.

Azure CVE-2026-21532

HIGH

Information Exposure (CWE-200)

2026-02-05 secure@microsoft.com

Azure Information Disclosure Azure Functions

8.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.2 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Feb 05, 2026 - 23:15 nvd

HIGH 8.2

DescriptionCVE.org

Azure Function Information Disclosure Vulnerability

AnalysisAI

Azure Function Information Disclosure Vulnerability [CVSS 8.2 HIGH]

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Send unauthenticated request to Azure Function endpoint

Exploit

Access exposed environment variables and connection strings

Impact

Retrieve sensitive credentials and configuration data

Access

Send unauthenticated request to Azure Function endpoint

Exploit

Access exposed environment variables and connection strings

Impact

Retrieve sensitive credentials and configuration data

Vulnerability AssessmentAI

Exploitation	Azure Function HTTP trigger exposed publicly without authentication; environment variables or application settings accessible via function runtime or response headers; no IP restrictions or private endpoint configured on function app. Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 8.2 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker could exploit this vulnerability to compromise the affected system.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all Azure Functions in your environment and assess which handle sensitive data; enable diagnostic logging to detect exploitation attempts. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-21532 vulnerability details – vuln.today

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Azure CVE-2026-21532

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Unlock full vulnerability intelligence

Attack ChainAIDerived

Vulnerability AssessmentAI

Recommended ActionAI

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External POC / Exploit Code