What is CVE-2025-63617?

CVE-2025-63617 is a medium-severity vulnerability in Kutangguo Ktg-Mes, classified under Deserialization of Untrusted Data. CVSS score: 6.5/10. Published 2025-11-10.

How severe is CVE-2025-63617?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Deserialization in Kutangguo Ktg-Mes

CVE-2025-63617

ktg-mes before commit a484f96 (2025-07-03) has a fastjson deserialization vulnerability. This is because it uses a vulnerable version of fastjson and deserializes unsafe input data.

Vulnerability class: Insecure Deserialization

Published 2025-11-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (18.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.8% 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

Kutangguo Ktg-Mes

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

github.com/ChangeYourWay/post/blob/main/ktg-mes.md (Exploit, Third Party Advisory)
gist.github.com/ChangeYourWay/8651679a2155269bccf520fcb34fc661 (Third Party Advisory)

Frequently asked questions

What is CVE-2025-63617?: CVE-2025-63617 is a medium-severity vulnerability in Kutangguo Ktg-Mes, classified under Deserialization of Untrusted Data. CVSS score: 6.5/10. Published 2025-11-10.
How severe is CVE-2025-63617?: Medium severity. CVSS v3 base score is 6.5 out of 10.