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High severity7.3NVD Advisory· Published Apr 22, 2021· Updated Jun 17, 2026

CVE-2021-0235

CVE-2021-0235

Description

On SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3, vSRX Series devices using tenant services on Juniper Networks Junos OS, due to incorrect permission scheme assigned to tenant system administrators, a tenant system administrator may inadvertently send their network traffic to one or more tenants while concurrently modifying the overall device system traffic management, affecting all tenants and the service provider. Further, a tenant may inadvertently receive traffic from another tenant. This issue affects: Juniper Networks Junos OS 18.3 version 18.3R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2; 18.4 version 18.4R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.1 versions 19.1R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.3 versions prior to 19.3R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.4 versions prior to 19.4R2-S4, 19.4R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 20.1 versions prior to 20.1R2, 20.1R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; 20.2 versions prior to 20.2R2-S1, 20.2R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; 20.3 versions prior to 20.3R1-S2, 20.3R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; 20.4 versions prior to 20.4R1, 20.4R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series. This issue does not affect Juniper Networks Junos OS versions prior to 18.3R1.

Affected products

95
  • Juniper Networks/Junos93 versions
    cpe:2.3:o:juniper:junos:18.3:r1-s1:*:*:*:*:*:*+ 92 more
    • cpe:2.3:o:juniper:junos:18.3:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r1-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r1-s4:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r1-s5:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r1-s6:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r2-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r2-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r2-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r2-s4:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r3-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r3-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r3-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.3:r3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r1-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r1-s6:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r1-s7:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r2-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r2-s4:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r2-s5:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r2-s6:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r3-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r3-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r3-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r3-s4:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r3-s5:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:18.4:r3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r1-s5:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r3-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r3-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r3-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.1:r3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.2:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.2:r1-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.2:r1-s4:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.2:r1-s5:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.2:r2-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.2:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.2:r3-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.2:r3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.3:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.3:r2-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.3:r2-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.3:r2-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.3:r2-s4:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.3:r2-s5:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.3:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.3:r3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.4:r2-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.4:r3-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:*
    • (no CPE)range: 18.3R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2; 18.4R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.1 versions 19.1R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; prior to 19.2R1-S6, 19.2R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; prior to 19.3R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; prior to 19.4R2-S4, 19.4R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; prior to 20.1R2, 20.1R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; prior to 20.2R2-S1, 20.2R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; prior to 20.3R1-S2, 20.3R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; prior to 20.4R1, 20.4R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series
    • (no CPE)range: unspecified
  • Juniper Networks/vSRX Seriesllm-create
    Range: 20.1 versions prior to 20.1R2, 20.1R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; 20.2 versions prior to 20.2R2-S1, 20.2R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; 20.3 versions prior to 20.3R1-S2, 20.3R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; 20.4 versions prior to 20.4R1, 20.4R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series
  • Juniper Networks/SRX1500llm-fuzzy
    Range: 18.3R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2; 18.4R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.1 versions 19.1R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; prior to 19.2R1-S6, 19.2R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; prior to 19.3R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; prior to 19.4R2-S4, 19.4R3-S2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; prior to 20.1R2, 20.1R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; prior to 20.2R2-S1, 20.2R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; prior to 20.3R1-S2, 20.3R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series; prior to 20.4R1, 20.4R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3 vSRX Series

Patches

Vulnerability mechanics

References

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