What’s Vulnerable › Vulnerabilities

CVE-2025-42873: Denial of Service (DoS) in SAPUI5 framework (Markdown-it component)

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-09 · updated 2026-10-07
• Weakness: CWE-405

Description

SAPUI5 (and OpenUI5) packages use outdated 3rd party libraries with known security vulnerabilities.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.

Affected products

• SAP_SE SAPUI5 framework (Markdown-it component): SAP_UI 755, 756, 757, 758

References

• https://me.sap.com/notes/3676970
• https://url.sap/sapsecuritypatchday

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