Quick answers
- Is CVE-2026-102026 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-102026 being exploited in the wild.
- How severe is CVE-2026-102026?
- High severity, with a CVSS score of 7.5, 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-2026-102026?
- 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-2026-102026 attacked?
- It is attacked from the adjacent network, in an operating system.
- Am I affected by CVE-2026-102026?
- 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
An improper resource lifetime control vulnerability in the routing protocol daemon (rpd) allows an adjacent eBGP peer to trigger a use-after-free or resource exhaustion condition via a crafted BGP route update when RIB (Routing Information Base) sharding is enabled. The attack requires network adjacency and BGP peering; successful exploitation causes a crash of the rpd process, resulting in loss of routing services. A fix is available in patched versions.
Affected products
- Juniper Networks Junos OS
- Juniper Networks Junos OS Evolved
Timeline
- 2026-10-14: disclosed