CVE-2026-102014: CWE-121 Stack-based Buffer Overflow in Juniper Networks Junos OS
Description
CVE-2026-102014 is a stack-based buffer overflow vulnerability in the authd process of Juniper Networks Junos OS. An attacker who can influence a configured RADIUS server can exploit this flaw by sending a malicious RADIUS response, potentially causing authd to crash or execute arbitrary code with root privileges. The vulnerability affects multiple versions of Junos OS prior to specific patch releases. It has a high severity with a CVSS score of 8.8, indicating significant impact on confidentiality, integrity, and availability.
CVSS v3.1
Score 8.8high
Affected software
Juniper Networks
Junos OS
pkg:rpm/juniper/junos-osRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a stack-based buffer overflow (CWE-121) in the authd process of Juniper Networks Junos OS. It allows an unauthenticated attacker with the ability to influence a configured RADIUS server to send a malicious RADIUS response that triggers the overflow. Successful exploitation can lead to a crash of the authd process or arbitrary code execution with root privileges. The vulnerability affects multiple Junos OS versions prior to certain patch releases, as specified by the affected version ranges. The CVSS v3.1 score is 8.8, reflecting high impact and low attack complexity without user interaction.
Potential Impact
Exploitation can result in denial of service due to authd process crashes or full system compromise through root-level code execution. This impacts system confidentiality, integrity, and availability. The vulnerability can be triggered remotely by influencing RADIUS server responses, making it a significant risk in environments using RADIUS authentication with Junos OS.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or workaround information is provided in the available data. Until a patch is available, restrict or monitor access to RADIUS servers and limit the ability of attackers to influence RADIUS responses where possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- juniper
- Date Reserved
- 2026-09-28T17:33:49.410Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acfb6722cdf04f65697950f
Added to database: 10/14/2026, 17:05:54 UTC
Last enriched: 10/14/2026, 17:19:57 UTC
Last updated: 10/14/2026, 19:00:32 UTC
Views: 3
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