What is CVE-2026-100291?

CVE-2026-100291 is a critical-severity vulnerability, classified under Initialization of a Resource with an Insecure Default. CVSS score: 9.8/10. Published 2026-09-29.

How severe is CVE-2026-100291?

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

CVE-2026-100291

CVE-2026-100291

In Anjvision YSSD‑RTMP‑H5 firmware version 3.3.2.4, several ONVIF service endpoints process management requests without enforcing required authentication. This could allow an unauthorized attacker to access sensitive device operations.

Published 2026-09-29 · last modified 2026-09-29.

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

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Weakness classification (CWE)

CWE-1188 — Initialization of a Resource with an Insecure Default

References

www.cisa.gov/news-events/ics-advisories/icsa-26-272-05 (government-resource)

Frequently asked questions

What is CVE-2026-100291?: CVE-2026-100291 is a critical-severity vulnerability, classified under Initialization of a Resource with an Insecure Default. CVSS score: 9.8/10. Published 2026-09-29.
How severe is CVE-2026-100291?: Critical severity. CVSS v3 base score is 9.8 out of 10.