What is CVE-2026-1221?

CVE-2026-1221 is a critical-severity vulnerability in Browan Communications Prismx Mx100 Ap Controller, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-01-20.

How severe is CVE-2026-1221?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Browan Communications Prismx Mx100 Ap Controller

CVE-2026-1221

PrismX MX100 AP controller developed by BROWAN COMMUNICATIONS has a Use of Hard-coded Credentials vulnerability, allowing unauthenticated remote attackers to log in to the database using hardcoded database credentials stored in the firmware.

Published 2026-01-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (40.3th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.3% 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: 0.005 · change: +0.001

Affected products

Browan Communications Prismx Mx100 Ap Controller — versions 0

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

www.twcert.org.tw/tw/cp-132-10642-3b808-1.html (third-party-advisory)
www.twcert.org.tw/en/cp-139-10643-2f8d7-2.html (third-party-advisory)

Frequently asked questions

What is CVE-2026-1221?: CVE-2026-1221 is a critical-severity vulnerability in Browan Communications Prismx Mx100 Ap Controller, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-01-20.
How severe is CVE-2026-1221?: Critical severity. CVSS v3 base score is 9.8 out of 10.