CVE-2026-77061 boneIO CVE debrief

Who should care

Defenders responsible for boneIO Black devices on local networks should assess exposure and prioritize upgrading to version 1.6.0 or later. This includes verifying the exposure of boneIO Black devices, reviewing compensating controls for exposed systems, and monitoring for suspicious activity related to system logs and configuration files. Security teams should also track exceptions, retest remediated assets, and close the item only after evidence is

Why it matters

CVE-2026-77061 allows unauthenticated remote attackers to retrieve sensitive information from boneIO Black devices on local networks. Defenders should prioritize verifying exposure and upgrading to version 1.6.0 or later.

• Verify exposure of boneIO Black devices on local networks
• Upgrade to version 1.6.0 or later to prevent unauthorized access
• Monitor for suspicious activity related to system logs and configuration files

Technical summary

boneIO Black directly excludes several API endpoints from authentication, allowing unauthenticated remote attackers on the local network to retrieve sensitive information, including system logs, firmware version, serial number, MQTT username, configuration file listings, and API documentation. This issue was fixed in version 1.6.0 by requiring an authenticated role for every API route, disabling the interactive API documentation, and withholding the serial number from anonymous callers. Defenders should prioritize verifying exposure of boneIO Black devices on their local network and upgrading to version 1.6.0 or later.

Defensive priority

Defenders should prioritize verifying exposure of boneIO Black devices on their local network and upgrading to version 1.6.0 or later.

Recommended defensive actions

• Verify exposure of boneIO Black devices on the local network
• Upgrade to boneIO version 1.6.0 or later
• Monitor for unauthorized access to system logs and configuration files
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability and its fix. However, additional information on potential exploitation or impact is limited. Defenders should verify the exposure of boneIO Black devices on their local network and assess the potential impact of the vulnerability. The lack of authentication for several API endpoints allows for easy exploitation, and defenders should prioritize verifying exposure and upgrading to version 1.6.0 or later.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.