CVE-2026-101982: Juniper Networks Junos OS stack buffer overflow in BGP/EVPN

CVE-2026-101982 · Severity: critical · CVSS 9.8 · Published 2026-10-14

A stack-based buffer overflow exists in Juniper's routing protocol daemon (rpd), the core component that processes BGP and EVPN route advertisements on Junos routers. An attacker with network access to a configured BGP/EVPN peer can send specially crafted EVPN-VPWS route advertisements to execute code with root privileges on Junos OS or crash the routing daemon on Junos OS Evolved, resulting in complete system compromise or denial of service.

Technologies: Juniper Networks Junos OS, Juniper Networks Junos OS Evolved. Vendors: Juniper Networks.

Quick answers

Is CVE-2026-101982 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-101982 being exploited in the wild.
How severe is CVE-2026-101982?
Critical severity, with a CVSS score of 9.8, published 14 October 2026.
Which products and versions are affected?
Juniper Networks Junos OS; Juniper Networks Junos OS Evolved.
Is there a fix for CVE-2026-101982?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-101982 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2026-101982?
Check whether you run Juniper Networks Junos OS or Juniper Networks Junos OS Evolved. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow in the routing protocol daemon (rpd) is triggered when processing protocol-valid EVPN-VPWS route advertisements from a configured BGP/EVPN peer. The vulnerability requires network-level access from a legitimate peer but no authentication bypass, and allows remote code execution as root on Junos OS or crash of the rpd process on Junos OS Evolved. The advisory indicates this is a memory corruption issue in the EVPN-VPWS service handling path.

Affected products

  • Juniper Networks Junos OS
  • Juniper Networks Junos OS Evolved

Timeline

  • 2026-10-14: disclosed

References

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