What is CVE-2025-21547?

CVE-2025-21547 is a critical-severity vulnerability in Oracle Hospitality_opera_5, classified under Uncontrolled Resource Consumption. CVSS score: 9.1/10. Published 2025-01-21.

How severe is CVE-2025-21547?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Resource exhaustion in Oracle Hospitality_opera_5

CVE-2025-21547

Vulnerability in the Oracle Hospitality OPERA 5 product of Oracle Hospitality Applications (component: Opera Servlet). Supported versions that are affected are 5.6.19.20, 5.6.25.8, 5.6.26.6 and 5.6.27.1. Easily exploitable vulnerability…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.005 (41.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Oracle Hospitality_opera_5 — versions 5.6.19.20, 5.6.25.8, 5.6.26.6
Oracle Corporation Hospitality Opera 5 — versions 5.6.19.20, 5.6.25.8, 5.6.26.6

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

secalert_us@oracle.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2025-21547?: CVE-2025-21547 is a critical-severity vulnerability in Oracle Hospitality_opera_5, classified under Uncontrolled Resource Consumption. CVSS score: 9.1/10. Published 2025-01-21.
How severe is CVE-2025-21547?: Critical severity. CVSS v3 base score is 9.1 out of 10.