VULNERABILITY INTELLIGENCE

CVE-2026-8286

CVSS score8.1 HIGH

EPSS probability0.31%

CISA KEVNot currently listed

Published2026-07-03

Last modified2026-09-15

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Description

A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even though the TLS configuration mismatches so it should not.

Weakness classification

CWE-295: Improper Certificate Validation

Primary references

2499f714-1537-4658-8207-48ae4bb9eae9 — Patch, Vendor Advisory
2499f714-1537-4658-8207-48ae4bb9eae9 — Vendor Advisory
2499f714-1537-4658-8207-48ae4bb9eae9 — Exploit, Issue Tracking, Third Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Issue Tracking, Third Party Advisory