CVE-2026-102028: CWE-476 NULL Pointer Dereference in Juniper Networks Junos OS
Description
CVE-2026-102028 is a NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved. It allows a remote BGP peer to cause a denial of service by sending multiple UPDATE messages over a single TCP session when 'bgp family l2vpn auto-discovery-only' is configured. The vulnerability has a high severity with a CVSS score of 7.5.
CVSS v3.1
Score 7.5high
Affected software
Juniper Networks
Junos OS
Juniper Networks
Junos OS Evolved
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 involves a NULL Pointer Dereference in the routing protocol daemon (rpd) component of Juniper Networks Junos OS and Junos OS Evolved. Specifically, when the configuration includes 'bgp family l2vpn auto-discovery-only', a remote BGP peer can trigger a denial of service by sending multiple UPDATE messages over a single TCP session. The flaw results in a crash or disruption of the routing daemon, impacting availability.
Potential Impact
The vulnerability allows remote unauthenticated attackers (BGP peers) to cause a denial of service condition by crashing the routing protocol daemon. This impacts the availability of affected Junos OS devices, potentially disrupting network routing operations. There is no impact on confidentiality or integrity as per the CVSS vector.
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 consider temporary workarounds if available. Since this is not a cloud service, remediation depends on applying vendor patches or configuration changes once available.
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: 6acfb6742cdf04f65697951e
Added to database: 10/14/2026, 17:05:56 UTC
Last enriched: 10/14/2026, 17:18:30 UTC
Last updated: 10/14/2026, 19:00:32 UTC
Views: 10
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