ET EXPLOIT Microsoft Copilot One-Click Auto Execution Prompt (CVE-2026-24301)

7.0.35.0SID: 2071788Rev: 1Enabled12 views
Sourceet/open
Fileemerging-exploit.rules
CreatedAugust 25, 2026
UpdatedAugust 25, 2026
Classificationattempted-user
alert smtp any any -> [$HOME_NET,$SMTP_SERVERS] any (msg:"ET EXPLOIT Microsoft Copilot One-Click Auto Execution Prompt (CVE-2026-24301)"; reference:url,www.varonis.com/blog/cosnitch; reference:cve,2026-24301; classtype:attempted-user; sid:2071788; rev:1; metadata:attack_target Server, created_at 2026_08_25, cve CVE_2026_24301, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, updated_at 2026_08_25, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)
Detection details are hidden.

References

urlwww.varonis.com/blog/cosnitch
cve2026-24301

Metadata

attack targetServer
created at2026_08_25
deploymentInternal
confidenceMedium
signature severityMajor
tagExploit
updated at2026_08_25
mitre tactic idTA0001
mitre tactic nameInitial_Access
mitre technique idT1190
mitre technique nameExploit_Public_Facing_Application

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