Junos OS: MX Series: For subscribers configured on static interfaces, input filters are not in effect (Juniper Networks Junos OS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 13 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- juniper
- NVD status
- Analyzed
Description
An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on MX Series allows adjacent subscribers to bypass configured firewall filters. On MX Series devices with MPC10/11, LC4800/9600, and MX304 with subscribers configured on static interfaces, ingress firewall filters are not enforced, so that neither protocol level nor upstream bandwidth limitation are in effect. This issue affects Junos OS on MX with MPC10/11, LC4800/9600/4802, and MX304: * 23.2 versions from 23.2R2-S1 before 23.2R2-S7, * 23.4 versions from 23.4R2 before 23.4R2-S7, * 24.2 versions before 24.2R2-S3, * 24.4 versions before 24.4R2-S2, * 25.2 versions before 25.2R2.
Weaknesses (CWE)
- CWE-754 — Improper Check for Unusual or Exceptional Conditions
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 4.7 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N | juniper |
| CVSS 4.0 | MEDIUM 5.3 | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/AU:Y/RE:M | juniper |
| CVSS 4.0 | MEDIUM 5.3 | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:X | NVD · sirt@juniper.net (Secondary) |
| CVSS 3.1 | MEDIUM 4.7 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N | NVD · sirt@juniper.net (Secondary) |
European references
- ENISA EUVD · EUVD-2026-42721
- GCVE · GCVE-0-2026-57031
CERT-FR advisories
- CERTFR-2026-AVI-0852 — Multiples vulnérabilités dans les produits Juniper Networks · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:juniper:junos:23.2:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:r2-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:r2-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:r2-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:r2-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.4:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.4:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.4:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.4:r1-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.4:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.4:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:25.2:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:25.2:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:25.2:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:25.2:r1-s2:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Juniper Networks · Junos OS | affected 23.2R2-S1 < 23.2R2-S7 ; affected 23.4R2 < 23.4R2-S7 ; affected 24.2 < 24.2R2-S3 ; affected 24.4 < 24.4R2-S2 ; affected 25.2 < 25.2R2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |