CVE-2026-101985: CWE-1284 Improper Validation of Specified Quantity in Input in Juniper Networks Junos OS Evolved
Description
A Improper Validation of Specified Quantity in Input vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated IS-IS peer to cause a denial of service.
CVSS v3.1
Score 6.5medium
Affected software
Juniper Networks
Junos OS Evolved
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-101985) is classified as CWE-1284, indicating improper validation of specified quantity in input. It exists in the routing protocol daemon (rpd) of Juniper Networks Junos OS Evolved running on PTX Series devices. An unauthenticated IS-IS peer can exploit this vulnerability to cause a denial of service, impacting system availability. The CVSS 3.1 base score is 6.5, reflecting medium severity, with attack vector as adjacent network, low attack complexity, no privileges required, no user interaction, and impact limited to availability.
Potential Impact
The vulnerability allows an unauthenticated IS-IS peer to cause a denial of service on affected Junos OS Evolved PTX Series devices. There is no impact on confidentiality or integrity. The denial of service could disrupt network routing functions, potentially affecting network availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No vendor advisory or patch links are provided in the input data. Until a patch or official fix is available, network administrators should monitor for unusual IS-IS peer behavior and consider isolating untrusted IS-IS peers where feasible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- juniper
- Date Reserved
- 2026-09-28T16:31:35.504Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acfaf322cdf04f65694d342
Added to database: 10/14/2026, 16:34:58 UTC
Last enriched: 10/14/2026, 18:49:02 UTC
Last updated: 10/15/2026, 00:48:34 UTC
Views: 8
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