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High severity8.1NVD Advisory· Published Apr 22, 2021· Updated Jun 17, 2026

CVE-2021-0266

CVE-2021-0266

Description

The use of multiple hard-coded cryptographic keys in cSRX Series software in Juniper Networks Junos OS allows an attacker to take control of any instance of a cSRX deployment through device management services. This issue affects: Juniper Networks Junos OS on cSRX Series: All versions prior to 20.2R3; 20.3 versions prior to 20.3R2; 20.4 versions prior to 20.4R2.

Affected products

11
  • Juniper Networks/Junos9 versions
    cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*+ 8 more
    • 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:20.3:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.4:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.4:r1:*:*:*:*:*:*
    • (no CPE)range: unspecified
  • Juniper Networks/Junos OS on SRX Seriesllm-fuzzy
    Range: <20.2R3, 20.3<20.3R2, 20.4<20.4R2
  • Juniper Networks/cSRX Seriesllm-fuzzy
    Range: <20.2R3, 20.3<20.3R2, 20.4<20.4R2

Patches

Vulnerability mechanics

References

1

News mentions

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