CVE-2026-102014 Juniper Networks CVE debrief

Who should care

Defenders responsible for Juniper Networks Junos OS deployments should assess exposure and prioritize verification and updates to prevent potential code execution or crashes. This includes reviewing and restricting RADIUS server configurations, monitoring authd process logs for suspicious activity, and verifying the vulnerability details with the official advisory or CVE record.

Why it matters

Defenders should prioritize verifying and updating Juniper Networks Junos OS versions to prevent potential code execution or crashes via malicious RADIUS responses. This vulnerability affects authd process and requires attention from defenders responsible for Juniper Networks Junos OS deployments.

• Potential code execution with root privileges via malicious RADIUS responses
• Possible authd process crashes leading to denial of service
• Need for verification and updates to Juniper Networks Junos OS versions
• Importance of monitoring authd process logs for suspicious activity

Technical summary

A Stack-based Buffer Overflow vulnerability in the authd process of Juniper Networks Junos OS allows an attacker able to influence a configured RADIUS server to cause authd to crash or execute code with root privileges via a malicious RADIUS response. This vulnerability affects the authd process and requires attention from defenders responsible for Juniper Networks Junos OS deployments. The vulnerability has a high CVSS score of 8.7 and is classified as HIGH severity. The CVE record and NVD entry provide details on the vulnerability.

Defensive priority

Defenders should prioritize verifying and updating Juniper Networks Junos OS versions to prevent potential code execution or crashes via malicious RADIUS responses.

Recommended defensive actions

• Verify and update Juniper Networks Junos OS versions to prevent potential code execution or crashes
• Review and restrict RADIUS server configurations to minimize the attack surface
• Monitor authd process logs for suspicious activity
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but additional information on affected versions and remediation is needed. The evidence is limited, and defenders should verify the vulnerability details with the official advisory or CVE record. The NVD entry and CVE Program record provide source-provided CVE metadata and official vulnerability assessment.

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.