Remote crash of Junos routing daemon on widely deployed Juniper routers can cause network/ISP outages; broad network impact merits wide alerting.
CVE-2026-101963
Remote BGP EVPN neighbor can crash Junos rpd when SRv6 EVPN multihoming is configured.
Is CVE-2026-101963 being exploited?
Not confirmed. CVE-2026-101963 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-101963?
CVE-2026-101963 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-101963?
Yes. A fix has been recorded for CVE-2026-101963. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-101963 affect?
CVE-2026-101963 affects Juniper Junos OS, Juniper Junos EVO, rpd (routing protocol daemon), SRv6 EVPN multihoming configurations. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-101963?
Apply Juniper JSA112187 patches; disable SRv6 EVPN multihoming if patch delayed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote DoS: a BGP EVPN neighbor can crash rpd, causing route loss, traffic disruption and network outages.
Immediate action required
- affected>= 25.2 and < 25.2R2-S2
- affected>= 25.4 and < 25.4R1-S3
- affected>= 26.2 and < 26.2R1-S2
- affected>= 25.2 and < 25.2R2-S2-EVO
- affected>= 25.4 and < 25.4R1-S3-EVO
- affected>= 26.2 and < 26.2R1-S2-EVO
- affected23.4X100
- affected>= 25.2X100 and < 25.2X100-D35-EVO
- affected>= 25.4X300 and < 25.4X300-D40-EVO
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.