Affects Juniper Junos routing daemon (widely deployed network infrastructure). Can disrupt routing across organizations and service providers; notable operational impact.
CVE-2026-101941
NULL-pointer DoS in Juniper rpd via crafted BGP update with resolution-map+event-tracing enabled
Is CVE-2026-101941 being exploited?
Not confirmed. CVE-2026-101941 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. EPSS currently estimates a 0.46% probability of exploitation in the next 30 days.
How severe is CVE-2026-101941?
CVE-2026-101941 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-2026-101941?
Not known from our data. No patch reference has been recorded for CVE-2026-101941, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-101941 affect?
CVE-2026-101941 affects Juniper Junos OS, Juniper Junos OS Evolved, rpd (routing protocol daemon), BGP service. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-101941?
Apply Juniper advisory mitigations, restrict/monitor BGP peers, and install vendor fix when available
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote Denial of Service: a configured BGP neighbor can crash Junos rpd via a crafted BGP route update when resolution-map and policy event-tracing are enabled, disrupting routing.
Immediate action required
- affected< 23.2R2-S7.7
- affected>= 23.4 and < 23.4R2-S8.13
- affected>= 24.2 and < 24.2R2-S5.5
- affected>= 24.4 and < 24.4R2-S5
- affected>= 25.2 and < 25.2R2-S2
- affected>= 25.4 and < 25.4R1-S3
- affected>= 26.2 and < 26.2R1-S2
- affected< 23.2R2-S7.7-EVO
- affected>= 23.4 and < 23.4R2-S8.11-EVO
- affected>= 24.2 and < 24.2R2-S5.6-EVO
- affected>= 24.4 and < 24.4R2-S5-EVO
- 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.