What is CVE-2023-4217?

CVE-2023-4217 is a low-severity vulnerability in Moxa Eds-G503, classified under Sensitive Cookie Without 'HttpOnly' Flag. CVSS score: 3.1/10. Published 2023-11-02.

How severe is CVE-2023-4217?

Low severity. CVSS v3 base score is 3.1 out of 10.

Vulnerability in Moxa Eds-G503

CVE-2023-4217

A vulnerability has been identified in PT-G503 Series versions prior to v5.2, where the session cookies attribute is not set properly in the affected application. The vulnerability may lead to security risks, potentially exposing user session data to unauthorized access and manipulation.

Published 2023-11-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (23.9th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

www.moxa.com/en/support/product-support/security-advisory/mpsa-230203-pt-g503-s… (vendor-advisory, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2023-4217?: CVE-2023-4217 is a low-severity vulnerability in Moxa Eds-G503, classified under Sensitive Cookie Without 'HttpOnly' Flag. CVSS score: 3.1/10. Published 2023-11-02.
How severe is CVE-2023-4217?: Low severity. CVSS v3 base score is 3.1 out of 10.