CVE-2023-5183: Illumio Core Policy Compute Engine

High severity, CVSS 8.8. EPSS: 1.8% chance of exploitation in the next 30 days.

Unsafe deserialization of untrusted JSON allows execution of arbitrary code on affected releases of the Illumio PCE. Authentication to the API is required to exploit this vulnerability. The flaw exists within the network_traffic API endpoint. An attacker can leverage this vulnerability to execute code in the context of the PCE’s operating system user.  

Affected products

• Illumio Core Policy Compute Engine: before 19.3.7 (fixed in 19.3.7); from 21.2.0, before 21.2.8 (fixed in 21.2.8); from 21.5.0, before 21.5.36 (fixed in 21.5.36); from 22.2.0, before 22.2.42 (fixed in 22.2.42); from 22.5.0, before 22.5.31 (fixed in 22.5.31); from 23.2.0, before 23.2.11 (fixed in 23.2.11)

Published 2023-09-27. Last modified 2026-06-17.