What is CVE-2026-58058?

CVE-2026-58058 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Nmap - Integer Underflow in IPv6 Extension Header Parsing

Which CVE IDs does CVE-2026-58058 cover?

CVE-2026-58058 covers the following CVE IDs: CVE-2026-58058. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-58058?

CVE-2026-58058 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

CVE-2026-58058MediumCVSS 6.5

Nmap - Integer Underflow in IPv6 Extension Header Parsing

Vendor

Microsoft Security Response Center (MSRC)

Published

June 30, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-58058 →