A security vulnerability has been detected in Totolink N300RH 3.2.4-B20220812. This affects the function setWanConfig of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument priDns leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.
Casky was already ahead
This CVE exploits attack patterns that Casky's 255matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.
CVE-2026-7749 is a remote buffer overflow vulnerability in Totolik N300RH routers affecting the setWanConfig function within the web interface POST handler. By sending a specially crafted request with an oversized priDns parameter, attackers can overflow a stack buffer and achieve arbitrary code execution without authentication. This impacts home and small office users relying on this budget router model for network connectivity, potentially allowing attackers to establish persistent access, modify DNS settings for traffic interception, or launch attacks against connected devices on the network.
Casky's 255 matching security skills leverage Claude AI's extended reasoning to correlate this vulnerability with MITRE ATT&CK techniques TA0002 (Execution) and TA0003 (Persistence). Practitioners using Casky would detect exploitation attempts through skills mapped to CWE-119 and CWE-120 (buffer overflow detection patterns), identifying suspicious POST requests to /cgi-bin/cstecgi.cgi with abnormally large priDns values, unexpected system process spawning from the web service, and indicators of living-off-the-land persistence techniques. The platform's skill-based analysis would highlight command execution chains and network behavior consistent with post-exploitation activity, enabling teams to move beyond signature detection and understand the attacker's tactical flow.
Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →
These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-7749.
Casky has 255 skills that investigate the attack patterns behind CVE-2026-7749. Run one and get CVSS-scored findings in 3 minutes.
Run the skill that detects this →analyzing-browser-forensics-with-hindsight
digital forensics · low
analyzing-cobalt-strike-beacon-configuration
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analyzing-dns-logs-for-exfiltration
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building-automated-malware-submission-pipeline
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configuring-windows-event-logging-for-detection
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correlating-security-events-in-qradar
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deobfuscating-javascript-malware
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detecting-container-escape-attempts
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detecting-container-escape-with-falco-rules
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detecting-dcsync-attack-in-active-directory
threat hunting · low
detecting-dll-sideloading-attacks
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detecting-email-forwarding-rules-attack
threat hunting · low
detecting-evasion-techniques-in-endpoint-logs
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detecting-fileless-attacks-on-endpoints
endpoint security · low
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detecting-kerberoasting-attacks
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detecting-lateral-movement-with-splunk
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threat hunting · low
detecting-mimikatz-execution-patterns
threat hunting · low
detecting-ntlm-relay-with-event-correlation
threat hunting · low
detecting-pass-the-hash-attacks
threat hunting · low
detecting-privilege-escalation-attempts
threat hunting · low
detecting-privilege-escalation-in-kubernetes-pods
container security · low
detecting-process-hollowing-technique
threat hunting · low
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detecting-rootkit-activity
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detecting-suspicious-powershell-execution
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detecting-wmi-persistence
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red teaming · high
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red teaming · high
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red teaming · high
exploiting-nopac-cve-2021-42278-42287
red teaming · high
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penetration testing · medium
exploiting-zerologon-vulnerability-cve-2020-1472
red teaming · high
extracting-browser-history-artifacts
digital forensics · low
extracting-config-from-agent-tesla-rat
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extracting-credentials-from-memory-dump
digital forensics · low
extracting-iocs-from-malware-samples
malware analysis · medium
extracting-windows-event-logs-artifacts
digital forensics · low
hardening-docker-containers-for-production
container security · low
hardening-docker-daemon-configuration
container security · low
hardening-linux-endpoint-with-cis-benchmark
endpoint security · low
hardening-windows-endpoint-with-cis-benchmark
endpoint security · low
hunting-for-anomalous-powershell-execution
threat hunting · low
hunting-for-beaconing-with-frequency-analysis
threat hunting · low
hunting-for-cobalt-strike-beacons
threat hunting · low
hunting-for-command-and-control-beaconing
threat hunting · low
hunting-for-data-exfiltration-indicators
threat hunting · low
hunting-for-data-staging-before-exfiltration
threat hunting · low
hunting-for-dcom-lateral-movement
threat hunting · low
hunting-for-dcsync-attacks
threat hunting · low
hunting-for-defense-evasion-via-timestomping
threat hunting · low
hunting-for-dns-based-persistence
threat hunting · low
hunting-for-dns-tunneling-with-zeek
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hunting-for-domain-fronting-c2-traffic
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hunting-for-lateral-movement-via-wmi
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hunting-for-living-off-the-cloud-techniques
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hunting-for-living-off-the-land-binaries
threat hunting · low
hunting-for-lolbins-execution-in-endpoint-logs
threat hunting · low
hunting-for-ntlm-relay-attacks
threat hunting · low
hunting-for-persistence-mechanisms-in-windows
threat hunting · low
hunting-for-persistence-via-wmi-subscriptions
threat hunting · low
hunting-for-process-injection-techniques
threat hunting · low
hunting-for-registry-persistence-mechanisms
threat hunting · low
hunting-for-registry-run-key-persistence
threat hunting · low
hunting-for-scheduled-task-persistence
threat hunting · low
hunting-for-shadow-copy-deletion
threat hunting · low
hunting-for-spearphishing-indicators
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hunting-for-startup-folder-persistence
threat hunting · low
hunting-for-supply-chain-compromise
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hunting-for-suspicious-scheduled-tasks
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hunting-for-t1098-account-manipulation
threat hunting · low
hunting-for-unusual-network-connections
threat hunting · low
hunting-for-unusual-service-installations
threat hunting · low
hunting-for-webshell-activity
threat hunting · low
implementing-alert-fatigue-reduction
soc operations · low
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implementing-kubernetes-pod-security-standards
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implementing-memory-protection-with-dep-aslr
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implementing-mitre-attack-coverage-mapping
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implementing-network-policies-for-kubernetes
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implementing-opa-gatekeeper-for-policy-enforcement
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implementing-rbac-hardening-for-kubernetes
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implementing-runtime-security-with-tetragon
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implementing-siem-use-cases-for-detection
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implementing-soar-automation-with-phantom
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implementing-soar-playbook-with-palo-alto-xsoar
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implementing-supply-chain-security-with-in-toto
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implementing-threat-modeling-with-mitre-attack
soc operations · low
implementing-ticketing-system-for-incidents
soc operations · low
implementing-usb-device-control-policy
endpoint security · low
investigating-insider-threat-indicators
soc operations · low
investigating-phishing-email-incident
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investigating-ransomware-attack-artifacts
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performing-active-directory-bloodhound-analysis
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performing-container-escape-detection
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performing-container-security-scanning-with-trivy
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performing-credential-access-with-lazagne
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soc operations · low
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performing-dynamic-analysis-with-any-run
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performing-firmware-malware-analysis
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performing-initial-access-with-evilginx3
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performing-kerberoasting-attack
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container security · low
performing-kubernetes-etcd-security-assessment
container security · low
performing-kubernetes-penetration-testing
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performing-lateral-movement-detection
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performing-lateral-movement-with-wmiexec
red teaming · high
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performing-malware-persistence-investigation
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performing-memory-forensics-with-volatility3
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performing-mobile-device-forensics-with-cellebrite
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performing-network-forensics-with-wireshark
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performing-network-packet-capture-analysis
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performing-threat-hunting-with-yara-rules
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recovering-deleted-files-with-photorec
digital forensics · low
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reverse-engineering-dotnet-malware-with-dnspy
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reverse-engineering-malware-with-ghidra
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container security · low
scanning-kubernetes-manifests-with-kubesec
container security · low
securing-container-registry-with-harbor
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securing-helm-chart-deployments
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triaging-security-alerts-in-splunk
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