ET EXPLOIT Possible Cisco REST API Container for Cisco IOS XE Software Authentication Bypass Attempt (CVE-2019-12643)

SID: 2035010Rev: 30 viewsHistory

Sourceet/open

CreatedJanuary 28, 2022

UpdatedMay 15, 2026

Classificationattempted-admin

alert http any any -> [$HOME_NET,$HTTP_SERVERS] 55443 (msg:"ET EXPLOIT Possible Cisco REST API Container for Cisco IOS XE Software Authentication Bypass Attempt (CVE-2019-12643)"; flow:established,to_server; flowbits:set,ET.Cisco_ABypass; http.request_line; content:"get /api/v1/auth/token-services/debug http/1.1"; nocase; fast_pattern; http.accept; content:"application/json"; nocase; reference:cve,2019-12643; classtype:attempted-admin; sid:2035010; rev:3; metadata:created_at 2022_01_28, cve CVE_2019_12643, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_05_15, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)

References

cve	2019-12643

Metadata

created at2022_01_28

cveCVE-2019-12643

deploymentInternal

confidenceHigh

signature severityMajor

tagDescription_Generated_By_Proofpoint_Nexus

updated at2026_05_15

mitre tactic idTA0001

mitre tactic nameInitial_Access

mitre technique idT1190

mitre technique nameExploit_Public_Facing_Application

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