What is CVE-2025-42873?

CVE-2025-42873 is a medium-severity vulnerability in Sap Se Sapui5 Framework (Markdown-It Component), classified under Asymmetric Resource Consumption (Amplification). CVSS score: 5.9/10. Published 2025-12-09.

How severe is CVE-2025-42873?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Sap Se Sapui5 Framework (Markdown-It Component)

CVE-2025-42873

SAPUI5 (and OpenUI5) packages use outdated 3rd party libraries with known security vulnerabilities. When markdown-it encounters special malformed input, it fails to terminate properly, resulting in an infinite loop. This Denial of Service via infinite loop causes high CPU usage and system unresponsiveness due to a blocked processing thread. This vulnerability has no impact on confidentiality or integrity but has a high impact on system availability.

EPSS: 0.003 (26.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Sap_se Sapui5 Framework (Markdown-it Component) — versions SAP_UI 755, 756, 757

Weakness classification (CWE)

CWE-405 — Asymmetric Resource Consumption (Amplification)

References

Frequently asked questions

What is CVE-2025-42873?: CVE-2025-42873 is a medium-severity vulnerability in Sap Se Sapui5 Framework (Markdown-It Component), classified under Asymmetric Resource Consumption (Amplification). CVSS score: 5.9/10. Published 2025-12-09.
How severe is CVE-2025-42873?: Medium severity. CVSS v3 base score is 5.9 out of 10.