CVE-2026-35431
CVE-2026-35431 is a critical-severity vulnerability in Microsoft Entra Id with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.
Key facts
- Severity: Critical (CVSS 3.x base score 10.0)
- EPSS exploit prediction: 1% (40th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-25312
- Weakness: CWE-918
- Affected product: Microsoft Entra Id
- Published:
- Last modified:
Description
Server-side request forgery (ssrf) in Microsoft Entra ID Entitlement Management allows an unauthorized attacker to perform spoofing over a network.
Frequently asked questions
- What is CVE-2026-35431?
- Server-side request forgery (ssrf) in Microsoft Entra ID Entitlement Management allows an unauthorized attacker to perform spoofing over a network.
- How severe is CVE-2026-35431?
- CVE-2026-35431 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-35431 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-35431?
- CVE-2026-35431 affects Microsoft Entra Id. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-35431?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-35431 have an EU (EUVD) identifier?
- Yes. CVE-2026-35431 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25312.
- When was CVE-2026-35431 published?
- CVE-2026-35431 was published on 2026-04-23 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:entra_id:-:*:*:*:*:*:*:*
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