CVE-2026-102053: CWE-401 Improper Release of Memory Before Removing Last Reference in Juniper Networks Junos OS
Description
CVE-2026-102053 is a medium severity vulnerability in Juniper Networks Junos OS and Junos OS Evolved on QFX5K-family platforms. It involves improper release of memory before removing the last reference in the l2ald process. This flaw allows a configured EVPN peer to cause a denial of service by exhausting memory through EVPN-VXLAN active-active multihoming route processing.
CVSS v3.1
Score 5.3medium
Affected software
Juniper Networks
Junos OS
Juniper Networks
Junos OS Evolved
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-401) in the l2ald process of Juniper Networks Junos OS and Junos OS Evolved on QFX5K-family platforms results from improper release of memory before removing the last reference. An attacker controlling a configured EVPN peer can exploit this by sending EVPN-VXLAN active-active multihoming route processing traffic that causes memory exhaustion, leading to a denial of service condition.
Potential Impact
The vulnerability leads to denial of service (DoS) due to memory exhaustion in the affected Junos OS processes. There is no impact on confidentiality or integrity reported. The attack requires no privileges and no user interaction, and can be performed remotely over the network.
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 available data. Users should monitor Juniper Networks advisories for updates and apply patches once available. Until then, consider limiting or monitoring EVPN peer configurations to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- juniper
- Date Reserved
- 2026-09-28T17:35:40.522Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acfb66b2cdf04f6569794da
Added to database: 10/14/2026, 17:05:47 UTC
Last enriched: 10/14/2026, 18:19:22 UTC
Last updated: 10/14/2026, 19:00:32 UTC
Views: 2
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