Critical severity9.8NVD Advisory· Published Oct 19, 2021· Updated Jun 17, 2026
CVE-2021-31349
CVE-2021-31349
Description
The usage of an internal HTTP header created an authentication bypass vulnerability (CWE-287), allowing an attacker to view internal files, change settings, manipulate services and execute arbitrary code. This issue affects all Juniper Networks 128 Technology Session Smart Router versions prior to 4.5.11, and all versions of 5.0 up to and including 5.0.1.
Affected products
3- cpe:2.3:o:juniper:128_technology_session_smart_router_firmware:*:*:*:*:*:*:*:*Range: <4.5.11
- Range: <4.5.11, 5.0 up to and including 5.0.1
- Range: unspecified
Patches
Vulnerability mechanics
References
1- kb.juniper.net/JSA11256nvdVendor Advisory
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