ET WEB_SERVER Microsoft IIS Web Deploy Remote Code Execution via Insecure Deserialization (CVE-2025-53772)

7.0.3 5.0SID: 2065401Rev: 1Enabled20 views

Fileemerging-web_server.rules

CreatedOctober 27, 2025

UpdatedOctober 27, 2025

Classificationweb-application-attack

alert http any any -> $HOME_NET any (msg:"ET WEB_SERVER Microsoft IIS Web Deploy Remote Code Execution via Insecure Deserialization (CVE-2025-53772)"; flow:established,to_server; http.uri; content:"/msdeploy.axd"; startswith; http.header; to_lowercase; content:"msdeploy.method|3a 20|sync"; content:"msdeploy.syncoptions|3a 20|h4sia"; fast_pattern; reference:url,hawktrace.com/blog/cve-2025-53772; reference:cve,2025-53772; classtype:web-application-attack; sid:2065401; rev:1; metadata:affected_product Microsoft_IIS, attack_target Server, tls_state TLSDecrypt, created_at 2025_10_27, cve CVE_2025_53772, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_27, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)

References

url	hawktrace.com/blog/cve-2025-53772
cve	2025-53772

Metadata

affected productMicrosoft_IIS

attack targetServer

tls stateTLSDecrypt

created at2025_10_27

cve

CVE-2025-53772

deploymentSSLDecrypt

confidenceHigh

signature severityMajor

tagDescription_Generated_By_Proofpoint_Nexus

updated at2025_10_27

mitre tactic idTA0001

mitre tactic nameInitial_Access

mitre technique idT1190

mitre technique nameExploit_Public_Facing_Application

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