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PatchSiren cyber security CVE debrief

CVE-2026-35431 Microsoft CVE debrief

Microsoft Entra ID Entitlement Management Spoofing Vulnerability allows unauthorized attackers to perform spoofing over a network due to server-side request forgery (SSRF). This vulnerability affects Microsoft Entra ID Entitlement Management deployments, which may be exposed to unauthorized attackers. Defenders should assess exposure and potential impact on their deployments. The vulnerability has a CVSS score of 10 and a severity of CRITICAL. The CVE record and source item provide details on the vulnerability, but limited information is available on affected versions and exploitation.

Vendor
Microsoft
Product
Microsoft Entra
CVSS
CRITICAL 10
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-23
Original CVE updated
2026-10-15
Advisory published
2026-04-23
Advisory updated
2026-10-15

Who should care

Defenders responsible for Microsoft Entra ID Entitlement Management deployments should assess exposure and potential impact. This includes operators, platform administrators, vulnerability management teams, and security teams. They should review and apply vendor-provided patches to mitigate the vulnerability.

Why it matters

CVE-2026-35431 allows unauthorized attackers to perform spoofing over a network due to server-side request forgery (SSRF) in Microsoft Entra ID Entitlement Management.

  • Verify exposure of Microsoft Entra ID Entitlement Management deployments
  • Assess potential impact of server-side request forgery (SSRF)
  • Review and apply vendor-provided patches

Technical summary

Server-side request forgery (SSRF) in Microsoft Entra ID Entitlement Management allows an unauthorized attacker to perform spoofing over a network. This vulnerability affects Microsoft Entra ID Entitlement Management deployments and has a CVSS score of 10 and a severity of CRITICAL. Defenders should prioritize verifying exposure and assessing potential impact on their deployments.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact on Microsoft Entra ID Entitlement Management deployments.

Recommended defensive actions

  • Verify Microsoft Entra ID Entitlement Management deployments for exposure
  • Assess potential impact of server-side request forgery (SSRF)
  • Review and apply vendor-provided patches

Evidence notes

The CVE record and source item provide details on the vulnerability, but limited information is available on affected versions and exploitation. Defenders should verify exposure and assess potential impact on Microsoft Entra ID Entitlement Management deployments. The official CVE Program record and NIST NVD detail page provide additional information on the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-35431 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-35431

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-35431 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-35431

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.