ET WEB_SPECIFIC_APPS SonicWall SMA Authenticated Arbitrary File Write via NxPostConnectionScriptFileResource (CVE-2025-32820)
Sourceet/open
CreatedOctober 6, 2025
UpdatedOctober 6, 2025
Classificationweb-application-attack
alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS SonicWall SMA Authenticated Arbitrary File Write via NxPostConnectionScriptFileResource (CVE-2025-32820)"; flow:established,to_server; http.uri; content:"/__api__/v1/client/nxpostconnectionscript/file"; fast_pattern; http.request_body; content:"name|3d 22|upfile|22|"; content:"filename|3d 22|"; pcre:"/^[^\x22]*?(?:(?:\x2e|%2[Ee]){1,2}(?:\x2f|\x5c|%5[Cc]|%2[Ff]){1,}){2,}/R"; http.method; content:"POST"; reference:url,www.rapid7.com/blog/post/2025/05/07/multiple-vulnerabilities-in-sonicwall-sma-100-series-2025/; reference:cve,2025-32820; classtype:web-application-attack; sid:2065054; rev:1; metadata:affected_product SonicWall, attack_target Server, tls_state TLSDecrypt, created_at 2025_10_06, cve CVE_2025_32820, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_06, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)
References
Metadata
affected productSonicWall
attack targetServer
tls stateTLSDecrypt
created at2025_10_06
deploymentSSLDecrypt
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2025_10_06
mitre tactic idTA0001
mitre tactic nameInitial_Access
mitre technique idT1190
mitre technique nameExploit_Public_Facing_Application
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