What is CVE-2026-83964?

CVE-2026-83964 is a medium-severity vulnerability in Adobe Connect, classified under Improper Certificate Validation. CVSS score: 6.2/10. Published 2026-09-22.

How severe is CVE-2026-83964?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Vulnerability in Adobe Connect

CVE-2026-83964

Adobe Connect is affected by an Improper Certificate Validation vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue does not require user interaction.

Vulnerability class: Improper Certificate Validation

Published 2026-09-22 · last modified 2026-09-22.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

helpx.adobe.com/security/products/connect/apsb26-150.html (vendor-advisory)

Frequently asked questions

What is CVE-2026-83964?: CVE-2026-83964 is a medium-severity vulnerability in Adobe Connect, classified under Improper Certificate Validation. CVSS score: 6.2/10. Published 2026-09-22.
How severe is CVE-2026-83964?: Medium severity. CVSS v3 base score is 6.2 out of 10.