Advisory severityHigh7.5Juniper Networks Updated

High [CVE-2026-101963] Incorrect Calculation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos EVO allows a remote BGP EVPN neighbor to cause an rpd crash when SRv6 EVPN multihoming is configured

This high-severity Juniper Networks advisory covers CVE-2026-101963 affecting Junos OS, Junos OS Evolved.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-101963 Source published Oct 15, 2026Source updated Oct 15, 2026

VulniPulse record published Oct 15, 2026Record updated Oct 21, 2026

CVE-2026-101963

Affected products & platforms

Juniper NetworksJunosJunos OS Evolved

Open source advisory

Android app · Google Play

Monitor future Juniper Networks CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.

Matching phone alertsOptional email delivery

Get CVE alerts See app features

Summary

An Incorrect Calculation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos EVO allows a remote BGP EVPN neighbor to cause an rpd crash when SRv6 EVPN multihoming is configured.

Affected products named by the advisory: Junos OS Evolved.

Affected versions

Junos OS 25.2 before 25.2R2-S2
Junos OS 25.4 before 25.4R1-S3
Junos OS 26.2 before 26.2R1-S2
Junos OS Evolved 25.2 before 25.2R2-S2-EVO
Junos OS Evolved 25.4 before 25.4R1-S3-EVO
Junos OS Evolved 26.2 before 26.2R1-S2-EVO
Junos OS Evolved 23.4X100
Junos OS Evolved 25.2X100 before 25.2X100-D35-EVO
Junos OS Evolved 25.4X300 before 25.4X300-D40-EVO

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Fixed versions

25.2R2-S2
25.4R1-S3
26.2R1-S2
25.2R2-S2-EVO
25.4R1-S3-EVO
26.2R1-S2-EVO
25.2X100-D35-EVO
25.4X300-D40-EVO

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Mitigation

Upgrade to a fixed release: 25.2R2-S2, 25.4R1-S3, 26.2R1-S2, 25.2R2-S2-EVO, 25.4R1-S3-EVO, 26.2R1-S2-EVO. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Juniper Networks
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-101963 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-101963NVD CVE.org MITRE

Official resources

Junos OS software downloads & install/upgrade (target: 25.2R2-S2 / 25.4R1-S3 / 26.2R1-S2)
Official documentation
This advisory names 25.2R2-S2 / 25.4R1-S3 / 26.2R1-S2 as the first fixed releases — official upgrade documentation for Junos OS on SRX / MX / EX / QFX.
Junos OS release & EOL / support dates
Release notes
Confirm your train is still supported and pick a fixed maintenance release.
Juniper Security Advisories portal
Official documentation
Canonical Juniper SIRT advisory portal — search here for the full JSA text and revisions.

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.