ET WEB_SPECIFIC_APPS UTT formConfigNoticeConfig timestart Parameter Buffer Overflow Attempt (CVE-2026-0840)
Sourceet/open
CreatedJanuary 12, 2026
UpdatedJanuary 12, 2026
Classificationweb-application-attack
alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS UTT formConfigNoticeConfig timestart Parameter Buffer Overflow Attempt (CVE-2026-0840)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:30; content:"/goform/formConfigNoticeConfig"; fast_pattern; http.request_body; content:"timestart|3d|"; pcre:"/^[^&]{100,}(?:&|$)/R"; reference:url,github.com/GUOTINGTING2297/cve/blob/main/1234/30.md; reference:cve,2026-0840; classtype:web-application-attack; sid:2066678; rev:1; metadata:affected_product UTT, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_01_12, cve CVE_2026_0840, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_01_12, 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 productUTT
attack targetNetworking_Equipment
tls stateplaintext
created at2026_01_12
deploymentInternal
performance impactLow
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2026_01_12
mitre tactic idTA0001
mitre tactic nameInitial_Access
mitre technique idT1190
mitre technique nameExploit_Public_Facing_Application
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