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SearchLeak vulnerability enables one-click data theft from Microsoft 365 Copilot Enterprise

Evidence first: scan the strongest sources, then decide whether to go deeper.

Published 2026-06-15 13:00 UTCUpdated 2026-06-15 22:53 UTC
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cveexploitssecurity_toolingincident_response
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Evidence trail (top sources)
top sources (3 domains)domains are deduped. counts indicate coverage, not truth.
3 top sources shown
Overview

A critical vulnerability chain named SearchLeak (CVE-2026-42824) affects Microsoft 365 Copilot Enterprise, allowing attackers to steal sensitive data including emails, calendar details, files, and MFA codes via a specially crafted URL.

Entities
MicrosoftVaronis Threat LabsMicrosoft 365 Copilot
Score total
1.33
Momentum 24h
3
Posts
3
Origins
3
Source types
1
Duplicate ratio
0%
Why now
  • The vulnerability was recently discovered and publicly disclosed, requiring immediate attention.
  • Attackers could exploit this flaw with minimal user interaction—a single click.
  • Organizations using Microsoft 365 Copilot Enterprise need to assess and mitigate this risk promptly.
Why it matters
  • The vulnerability enables attackers to bypass traditional anti-phishing defenses using legitimate microsoft.com URLs.
  • It exposes sensitive enterprise data including emails, files, and MFA codes, risking data breaches.
  • Highlights security risks in AI-powered enterprise tools like Microsoft 365 Copilot.
LLM analysis
Topic mix: lowPromo risk: lowSource quality: medium
Recurring claims
  • SearchLeak vulnerability allows attackers to steal emails, files, calendar details, and MFA codes from Microsoft 365 Copilot Enterprise via a one-click attack.
How sources frame it
  • BleepingComputer: neutral
Consolidated multiple reports into a clear narrative emphasizing the criticality and unique bypass method of the SearchLeak vulnerability.
All evidence
All evidence
New attack turned Microsoft 365 Copilot into 1-click data theft tool
bleepingcomputer_all · bleepingcomputer.com · 2026-06-15 13:00 UTC
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Posts loaded: 0Publishers: 3Origin domains: 3Duplicates: -
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Top publishers (this list)
  • SC Media (1)
  • thehackernews (1)
  • bleepingcomputer_all (1)
Top origin domains (this list)
  • scworld.com (1)
  • thehackernews.com (1)
  • bleepingcomputer.com (1)