What is CVE-2026-89173?

CVE-2026-89173 is a medium-severity vulnerability, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2026-09-11.

How severe is CVE-2026-89173?

Medium severity. CVSS v3 base score is 5.3 out of 10.

CVE-2026-89173

CVE-2026-89173

Smart Video Intercom System developed by Kingdom Communication Associated has a Sensitive Data Exposure vulnerability. Unauthenticated remote attackers can enumerate valid user accounts by exploiting differences in system responses.

Published 2026-09-11 · last modified 2026-09-11.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (37.6th percentile), scored 2026-10-26.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Weakness classification (CWE)

CWE-204 — Observable Response Discrepancy

References

www.twcert.org.tw/tw/cp-132-11198-b8bba-1.html (third-party-advisory)
www.twcert.org.tw/en/cp-139-11199-38e1e-2.html (third-party-advisory)

Frequently asked questions

What is CVE-2026-89173?: CVE-2026-89173 is a medium-severity vulnerability, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2026-09-11.
How severe is CVE-2026-89173?: Medium severity. CVSS v3 base score is 5.3 out of 10.