What is CVE-2026-15027?

CVE-2026-15027 is a high-severity vulnerability in Changing Cgservisign, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-09-23.

How severe is CVE-2026-15027?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Changing Cgservisign

CVE-2026-15027

CGServiSign developed by Changing has a OS Command Injection vulnerability. Unauthenticated remote attackers can induce victims to visit a malicious web page and inject arbitrary OS commands through the local service interface, resulting in command execution on the victim's local computer.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-09-23 · last modified 2026-09-23.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.022 (81.5th percentile), scored 2026-09-24.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Changing Cgservisign — versions 1.0.23.1227

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.twcert.org.tw/tw/cp-132-11213-28a81-1.html (third-party-advisory)
www.twcert.org.tw/en/cp-139-11214-89281-2.html (third-party-advisory)

Frequently asked questions

What is CVE-2026-15027?: CVE-2026-15027 is a high-severity vulnerability in Changing Cgservisign, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-09-23.
How severe is CVE-2026-15027?: High severity. CVSS v3 base score is 8.8 out of 10.