CVSS Score of 10 (low)


Published Jul 14, 2023
Updated: Jul 27, 2023
CWE ID 1285


CVE-2023-36850 is an Improper Validation of Specified Index vulnerability in the Connectivity Fault Management (CFM) module of Juniper Networks Junos OS on MX Series, which allows an adjacent attacker on the local broadcast domain to cause a Denial of Service (DoS) attack. This vulnerability affects various versions of Junos OS on MX Series, including versions prior to 19.1R3-S10, 19.2R3-S7, 19.3R3-S8, 19.4R3-S12, 20.1R1 and later versions, 20.2R3-S7, 20.3R1 and later versions, 20.4R3-S7, and prior to 21.1R3-S5. The risk score for this vulnerability is 28 out of 100, indicating a medium severity level. To remediate this issue, it is recommended to upgrade to the patched versions provided by Juniper Networks. If CFM is not being used or configured, disabling it can also mitigate the risk posed by this vulnerability to organizations using affected products.

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