What is the CVSS score of EUVD-2026-25310?

EUVD-2026-25310 has a CVSS 3.1 base score of 9.3 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N. EPSS exploitation probability: 0.0%.

Is there a patch available for EUVD-2026-25310?

Yes, a patch is available for EUVD-2026-25310. Update the affected software to the latest version immediately.

Open Redirect EUVD-2026-25310

| CVE-2026-33102 CRITICAL

URL Redirection to Untrusted Site (Open Redirect) (CWE-601)

2026-04-23 microsoft

GHSA-q6x5-8v4h-crwr

Open Redirect

9.3

CVSS 3.1 · NVD

Temporal: 8.1

Severity by source

NVD PRIMARY

9.3 CRITICAL

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

CIRCL (temporal)

8.1 HIGH

cvss

Primary rating from NVD.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

EUVD ID Assigned

Apr 23, 2026 - 22:15 euvd

EUVD-2026-25310

Patch released

Apr 23, 2026 - 22:15 nvd

Patch available

CVE Published

Apr 23, 2026 - 21:35 nvd

CRITICAL 9.3

DescriptionCVE.org

Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.

Analysis

Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.

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EUVD-2026-25310 vulnerability details – vuln.today

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