What is CVE-2021-28579?

CVE-2021-28579 is a medium-severity vulnerability in Adobe Connect, classified under Improper Access Control. CVSS score: 4.3/10. Published 2021-06-28.

How severe is CVE-2021-28579?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Adobe Connect

CVE-2021-28579

Adobe Connect version 11.2.1 (and earlier) is affected by an Improper access control vulnerability that can lead to the elevation of privileges. An attacker with 'Learner' permissions can leverage this scenario to access the list of event participants.

Published 2021-06-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.011 (64.1th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Adobe Connect — versions unspecified

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

helpx.adobe.com/security/products/connect/apsb21-36.html (Vendor Advisory)

Frequently asked questions

What is CVE-2021-28579?: CVE-2021-28579 is a medium-severity vulnerability in Adobe Connect, classified under Improper Access Control. CVSS score: 4.3/10. Published 2021-06-28.
How severe is CVE-2021-28579?: Medium severity. CVSS v3 base score is 4.3 out of 10.