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[ CVE-2026-103994 · Published 14 Oct 2026 ]

Vulnerability in Juniper Networks Junos OS

CVSS 8.8 EPSS <1%2 agency advisoriesNo fix listed yet

[ Description ]Official description

A Heap-based Buffer Overflow vulnerability in the VXLAN Gateway Daemon (vgd) of Juniper Networks Junos OS allows a malicious or compromised SDN-controller to cause a complete outage of the OVSDB control plane and possibly remote code execution.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

  • NCSC-NLNCSC-2026-0430

    Vulnerabilities fixed in Juniper Networks Junos OS Translated from Dutch

    Probability/damage M/HCVE-2026-103994CVE-2026-102182CVE-2026-102176+12 more CVEs
  • CERT-FRCERTFR-2026-AVI-1322

    Multiple vulnerabilities in Juniper Networks products Translated from French

    Multiple vulnerabilities have been discovered in Juniper Networks products. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation and remote denial of service.

    CVE-2026-102045CVE-2026-101985CVE-2026-101982+155 more CVEs

[ References ]References