CVE-2023-5183

Authenticated RCE due to unsafe JSON deserialization

HIGH

8.8

CVSS Score

Published: September 26, 2023 at 09:29 PM UTC

Updated: June 17, 2026 at 06:47 AM UTC

1 product affected across 1 vendorCore Policy Compute Engine

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Severity

HIGH8.8

Exploit prediction

EPSS 2%

SSVC

No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Core Policy Compute Engine · Illumio

95%

v < 19.3.719.3.0 ≤ v ≤ 19.3.621.2.0 ≤ v ≤ 21.2.721.2.0 ≤ v < 21.2.821.5.0 ≤ v ≤ 21.5.3521.5.0 ≤ v < 21.5.3622.2.0 ≤ v ≤ 22.2.4122.2.0 ≤ v < 22.2.4222.5.0 ≤ v ≤ 22.5.3022.5.0 ≤ v < 22.5.3123.2.0 ≤ v ≤ 23.2.1023.2.0 ≤ v < 23.2.1119.3.0 21.2.0 21.5.0 22.2.0 22.5.0 23.2.0

Affected range stops below 19.3.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.2.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.5.36, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.2.42, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.5.31, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.2.11, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://docs.illumio.com/Guides/security-advisories/september-2023/cve-2023-5183.htm

References (1)

Vendor Advisory

Source: [email protected]

https://docs.illumio.com/Guides/security-advisories/september-2023/cve-2023-5183.htm

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-502

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