An out-of-bounds write due to improper null termination in convert_charset() in Netatalk 2.0.4 through 4.4.2 allows a remote authenticated attacker to execute arbitrary code or cause a denial of service via crafted character data.
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-2026-44049 is a critical out-of-bounds write vulnerability in Netatalk's convert_charset() function affecting versions 2.0.4 through 4.4.2. The flaw stems from improper null termination handling when processing character data, allowing remote authenticated attackers to write beyond allocated buffer boundaries. This matters because Netatalk is widely used in file sharing environments, particularly in legacy systems and hybrid networks. Organizations running affected versions face dual risks: remote code execution (RCE) enabling complete system compromise, and denial of service attacks that can disrupt critical file services.
Casky's 255 mapped skills enable detection of the attack patterns underlying this vulnerability by analyzing MITRE ATT&CK techniques TA0002 (Execution) and TA0003 (Persistence). Through Claude AI's extended reasoning capabilities, practitioners can identify suspicious patterns such as: abnormal process execution following character data processing requests, unexpected memory writes to non-allocated regions, and authentication bypass attempts paired with crafted charset payloads. Security teams using Casky would observe findings correlating anomalous API calls to convert_charset() with downstream process creation or file system modifications—the hallmark of exploitation chains. The skill mapping flags both the initial exploitation attempt (Execution) and indicators of post-compromise persistence, enabling defenders to correlate attack stages and respond before adversaries establish lasting access.
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-2026-44049.
Casky has 255 skills that investigate the attack patterns behind CVE-2026-44049. 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-cobaltstrike-malleable-c2-profiles
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analyzing-dns-logs-for-exfiltration
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analyzing-windows-shellbag-artifacts
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building-automated-malware-submission-pipeline
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red teaming · high
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conducting-pass-the-ticket-attack
red teaming · high
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red teaming · high
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configuring-windows-defender-advanced-settings
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configuring-windows-event-logging-for-detection
endpoint security · low
correlating-security-events-in-qradar
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deobfuscating-javascript-malware
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endpoint security · low
deploying-osquery-for-endpoint-monitoring
endpoint security · low
detecting-container-drift-at-runtime
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detecting-container-escape-attempts
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detecting-container-escape-with-falco-rules
container security · low
detecting-dcsync-attack-in-active-directory
threat hunting · low
detecting-dll-sideloading-attacks
threat hunting · low
detecting-email-forwarding-rules-attack
threat hunting · low
detecting-evasion-techniques-in-endpoint-logs
endpoint security · low
detecting-fileless-attacks-on-endpoints
endpoint security · low
detecting-fileless-malware-techniques
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detecting-kerberoasting-attacks
threat hunting · low
detecting-lateral-movement-with-splunk
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detecting-malicious-scheduled-tasks-with-sysmon
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
detecting-process-injection-techniques
malware analysis · medium
detecting-rootkit-activity
malware analysis · medium
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threat hunting · low
detecting-suspicious-powershell-execution
threat hunting · low
detecting-t1003-credential-dumping-with-edr
threat hunting · low
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threat hunting · low
detecting-t1548-abuse-elevation-control-mechanism
threat hunting · low
detecting-wmi-persistence
threat hunting · low
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red teaming · high
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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
malware analysis · medium
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
threat hunting · low
hunting-for-domain-fronting-c2-traffic
threat hunting · low
hunting-for-lateral-movement-via-wmi
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hunting-for-living-off-the-cloud-techniques
threat hunting · low
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
threat hunting · low
hunting-for-startup-folder-persistence
threat hunting · low
hunting-for-supply-chain-compromise
threat hunting · low
hunting-for-suspicious-scheduled-tasks
threat hunting · low
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
implementing-application-whitelisting-with-applocker
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implementing-container-image-minimal-base-with-distroless
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implementing-container-network-policies-with-calico
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implementing-disk-encryption-with-bitlocker
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implementing-endpoint-dlp-controls
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implementing-file-integrity-monitoring-with-aide
endpoint security · low
implementing-image-provenance-verification-with-cosign
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implementing-kubernetes-network-policy-with-calico
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implementing-kubernetes-pod-security-standards
container security · low
implementing-memory-protection-with-dep-aslr
endpoint security · low
implementing-mitre-attack-coverage-mapping
soc operations · low
implementing-network-policies-for-kubernetes
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implementing-opa-gatekeeper-for-policy-enforcement
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implementing-pod-security-admission-controller
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implementing-rbac-hardening-for-kubernetes
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implementing-runtime-security-with-tetragon
container security · low
implementing-siem-use-cases-for-detection
soc operations · low
implementing-soar-automation-with-phantom
soc operations · low
implementing-soar-playbook-with-palo-alto-xsoar
soc operations · low
implementing-supply-chain-security-with-in-toto
container security · low
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
soc operations · low
investigating-ransomware-attack-artifacts
digital forensics · low
performing-active-directory-bloodhound-analysis
red teaming · high
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digital forensics · low
performing-container-escape-detection
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performing-container-security-scanning-with-trivy
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performing-credential-access-with-lazagne
red teaming · high
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soc operations · low
performing-docker-bench-security-assessment
container security · low
performing-dynamic-analysis-with-any-run
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performing-firmware-malware-analysis
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performing-initial-access-with-evilginx3
red teaming · high
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penetration testing · medium
performing-kerberoasting-attack
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performing-kubernetes-cis-benchmark-with-kube-bench
container security · low
performing-kubernetes-etcd-security-assessment
container security · low
performing-kubernetes-penetration-testing
container security · low
performing-lateral-movement-detection
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performing-lateral-movement-with-wmiexec
red teaming · high
performing-linux-log-forensics-investigation
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performing-malware-persistence-investigation
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performing-memory-forensics-with-volatility3
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performing-network-forensics-with-wireshark
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performing-network-packet-capture-analysis
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performing-timeline-reconstruction-with-plaso
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recovering-deleted-files-with-photorec
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reverse-engineering-dotnet-malware-with-dnspy
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reverse-engineering-malware-with-ghidra
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scanning-container-images-with-grype
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scanning-kubernetes-manifests-with-kubesec
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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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