CVE-2026-80230: OpenSSL pinning bypass

Details

Source

Microsoft Security Response Center (INTL · vendor-psirt · site)

Severity

low — CVSS 3.7

Published

2026-09-08

Exploitation

Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80230

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-802300.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• medium[UPDATE] [mittel] cURL: Mehrere Schwachstellencert-bund
• highCVE-2026-80230: When `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable standard peer veri…nvd
• unknownMultiples vulnérabilités dans Curl (02 septembre 2026)cert-fr-avis

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