CVE-2021-40719 json
Adobe Connect Deserialization of Untrusted Data Remote Code Execution
published 2021-10-21 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27885
- cvss
- 9.8
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.5%
- EPSS 3.5% chance of exploitation in 30 days, percentile 89%
- public exploits
- 0
- none known
Summary
Adobe Connect version 11.2.3 (and earlier) is affected by a Deserialization of Untrusted Data vulnerability to achieve arbitrary method invocation when AMF messages are deserialized on an Adobe Connect server. An attacker can leverage this to execute remote code execution on the server.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 18 mo ago
Exploit prediction
3.53% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Adobe Connect
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
helpx.adobe.com
/security/products/connect/apsb21-91.html
release-notes, vendor-advisory
Sources
- CVE List CVE-2021-40719
- NVD CVE-2021-40719
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