CVE-2026-101949
7.5HighPublished 14 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Impact
- High impact on availability
- Weakness
- CWE-476
Impact
An unauthenticated remote BGP neighbor can crash the routing protocol daemon (rpd), causing a full denial of service. The attacker needs an established BGP session capable of sending VPN-flowspec routes.
Root cause
A NULL pointer dereference occurs in rpd when readvertising a VPN-flowspec BGP update while BMP post-policy RIB-out monitoring is active.
Affected systems
Juniper Networks Junos OS and Junos OS Evolved; exact version ranges not listed — check vendor advisory JSA112187.
CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Fix & remediation
Upgrade to the patched releases specified in Juniper advisory JSA112187, or temporarily disable BMP post-policy RIB-out monitoring / VPN-flowspec readvertisement to mitigate.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated remote BGP neighbor to cause a denial of service via a VPN-flowspec BGP update if it is readvertised and BMP post-policy RIB-out monitoring is configured.