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CVE-2023-5183

27
FAUCET Score

CVE-2023-5183 is an unsafe deserialization vulnerability affecting Illumio Core Policy Compute Engine (PCE) products. It allows authenticated attackers to execute arbitrary code on the PCE's operating system by sending specially crafted JSON to the network_traffic API endpoint. This vulnerability carries a high CVSS score of 8.8, indicating a severe impact with full confidentiality, integrity, and availability compromise. While authentication is required, the attack complexity is low. There is no evidence of active exploitation, nor are there public exploits available in Metasploit, Nuclei, or ExploitDB, though it has garnered significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 19.3.7CPE matchmatch criteria
cpe:2.3:a:illumio:core_policy_compute_engine:*:*:*:*:*:*:*:*
>= 21.2.0, < 21.2.8CPE matchmatch criteria
cpe:2.3:a:illumio:core_policy_compute_engine:*:*:*:*:*:*:*:*
>= 21.5.0, < 21.5.36CPE matchmatch criteria
cpe:2.3:a:illumio:core_policy_compute_engine:*:*:*:*:*:*:*:*
>= 22.2.0, < 22.2.42CPE matchmatch criteria
cpe:2.3:a:illumio:core_policy_compute_engine:*:*:*:*:*:*:*:*
>= 22.5.0, < 22.5.31CPE matchmatch criteria
cpe:2.3:a:illumio:core_policy_compute_engine:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.9CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.56%
Probability of exploitation in next 30 days
EPSS Percentile
72.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0156 is in the 70th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.illumio.com / Guides/security-advisories/september-2023/cve-2023-5183.htm
Vendor Advisory