CVE-2026-101939
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 BGP peer can crash the routing protocol daemon (rpd), causing a denial of service. The attacker only needs to send a BGP UPDATE when an import policy references a non-existent routing table.
Root cause
RPD encounters a NULL pointer dereference when processing a BGP UPDATE matching an import policy configured with 'then source-based-forwarding next-hop next-table' pointing to a missing routing table.
Affected systems
Versions not listed — check the 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
Refer to Juniper advisory JSA112187 for fixed releases. As an immediate workaround, verify your import policies and remove or correct any 'then source-based-forwarding next-hop next-table <X>' terms referencing non-existent routing tables.
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 a configured peer sending a BGP UPDATE to cause a denial of service when an import policy with `then source-based-forwarding next-hop next-table <X>` is configured to reference a routing table that does not exist.