CVE-2026-102033: CWE-1284 Improper Validation of Specified Quantity in Input in Juniper Networks Junos OS
Description
An Improper Validation of Specified Quantity in Input vulnerability in l2ald of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent attacker to cause a denial of service via an ICCP MC-LAG message.
CVSS v3.1
Score 6.5medium
Affected software
Juniper Networks
Junos OS
Juniper Networks
Junos OS Evolved
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-102033) arises from improper validation of specified quantity in input in the l2ald process of Juniper Networks Junos OS and Junos OS Evolved. An attacker with adjacent network access can send a malicious ICCP MC-LAG message to trigger a denial of service condition. The flaw is categorized under CWE-1284. The CVSS v3.1 base score is 6.5, indicating medium severity, with attack vector as adjacent network, low attack complexity, no privileges required, no user interaction, and impact limited to availability (denial of service).
Potential Impact
Successful exploitation results in denial of service, impacting availability of the affected Junos OS systems. There is no confidentiality or integrity impact reported. The attacker must have adjacent network access to send the malicious ICCP MC-LAG message.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the input data. Until a patch is available, restrict adjacent network access to the affected systems where possible to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- juniper
- Date Reserved
- 2026-09-28T17:33:49.411Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acfb6672cdf04f6569794be
Added to database: 10/14/2026, 17:05:43 UTC
Last enriched: 10/14/2026, 18:35:27 UTC
Last updated: 10/14/2026, 20:49:11 UTC
Views: 1
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