EUVD-2026-29697
Improper Access Control (CWE-284)
GHSA-r8h5-x7jj-cjjx
6.2
CVSS 3.1 · NVD
Temporal: 5.4
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Severity by source
NVD
PRIMARY
6.2
MEDIUM
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CIRCL (temporal)
5.4
MEDIUM
cvss
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Lifecycle Timeline
1
CVE Published
May 12, 2026 - 16:58 nvd
MEDIUM 6.2
DescriptionCVE.org
Improper access control in M365 Copilot for Desktop allows an unauthorized attacker to perform spoofing locally.
Analysis
Improper access control in M365 Copilot for Desktop allows an unauthorized attacker to perform spoofing locally.
Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
Destination URL
POC code from unknown sources may be malicious, contain backdoors, or be fake.
Always review and test exploit code in a safe, isolated environment (VM/sandbox).
Verify the source reputation and cross-reference with known databases (Exploit-DB, GitHub Security).