CVE-2026-101961
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
A configured eBGP peer can crash your routing daemon, causing a denial of service across the device. The attacker needs an established eBGP session and the router must have a nexthop-ecmp matcher configured on a BGP import policy.
Root cause
A NULL pointer dereference is triggered in the routing-policy engine when evaluating BGP packets against the nexthop-ecmp match condition.
Affected systems
Versions not listed — check the vendor advisory.
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 fixed Junos OS / Junos OS Evolved releases specified in advisory JSA112187; if patching cannot happen immediately, remove the 'nexthop-ecmp' condition from your BGP import routing policies.
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-policy nexthop-ECMP matcher of Juniper Networks Junos OS and Junos OS Evolved allows a configured eBGP peer to cause a routing-daemon denial of service via a specific BGP packet received while a nexthop-ecmp qualifier is attached to a BGP import policy.