Junos OS vulnerability

What happened

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.

Affected versions

Junos OS: before 23.2R2-S7.7 (custom); 23.4 through before 23.4R2-S8.13 (custom); 24.2 through before 24.2R2-S5.5 (custom); 24.4 through before 24.4R2-S5 (custom); 25.2 through before 25.2R2-S2 (custom); 25.4 through before 25.4R1-S3 (custom); 26.2 through before 26.2R1-S2 (custom) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.