What is CVE-2026-121356?

CVE-2026-121356 is a critical-severity vulnerability in Adobe Connect, classified under Server-Side Request Forgery (SSRF). CVSS score: 10.0/10. Published 2026-11-10.

How severe is CVE-2026-121356?

Critical severity. CVSS v3 base score is 10.0 out of 10.

SSRF in Adobe Connect

CVE-2026-121356

Adobe Connect is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in privilege escalation. Exploitation of this issue does not require user interaction. Scope is changed.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2026-11-10.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/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

Adobe Connect

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

www.adobe.com/trust/security/products/connect/apsb26-191.html (vendor-advisory)

Frequently asked questions

What is CVE-2026-121356?: CVE-2026-121356 is a critical-severity vulnerability in Adobe Connect, classified under Server-Side Request Forgery (SSRF). CVSS score: 10.0/10. Published 2026-11-10.
How severe is CVE-2026-121356?: Critical severity. CVSS v3 base score is 10.0 out of 10.