What is CVE-2025-21789?

CVE-2025-21789 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. LoongArch: csum: Fix OoB access in IP checksum code for negative lengths

Which CVE IDs does CVE-2025-21789 cover?

CVE-2025-21789 covers the following CVE IDs: CVE-2025-21789. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-21789?

CVE-2025-21789 has a CVSS v3 base score of 7.1, published by Microsoft Security Response Center (MSRC).

CVE-2025-21789HighCVSS 7.1

LoongArch: csum: Fix OoB access in IP checksum code for negative lengths

Vendor

Microsoft Security Response Center (MSRC)

Published

June 3, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-21789 →