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TI-2021-17669 Aliases CVE-2021-40719GHSA-rj2h-5w53-cg32

Adobe Connect Deserialization of Untrusted Data Remote Code Execution

Priority MEDIUM 55CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-502.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03532 89th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AdobeConnectup to 11.2.3; up to None—No fix listedCNA
  • Connect VendorAdobe Affected up to 11.2.3; up to None Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:adobe:connect:*:*:*:*:*:*:*:*up to 11.2.3VulnerableAdobe
  • cpe:2.3:a:adobe:connect:*:*:*:*:*:*:*:* Versions up to 11.2.3 Vulnerable ·Adobe

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40719
  2. 2026-10-03 Alias added: GHSA-rj2h-5w53-cg32

References

Advisory 1

  • TI-2023-08504 Adobe Connect Improper Access Control Security feature bypass CVSS 3.1MEDIUM 5.3
  • TI-2018-09178 Improper authentication in Adobe Connect 9.7.5 and earlier CVSS 3.0CRITICAL 9.8
  • TI-2023-04295 RCE in Saphira Connect CVSS 3.1CRITICAL 9.8
  • TI-2023-04294 SQLi in Saphira Connect CVSS 3.1CRITICAL 9.8
  • TI-2017-08334 Server-side request forgery in Adobe Connect 9.6.2 and earlier versions CVSS 3.0CRITICAL 10.0
  • TI-2018-03491 OS command injection in Adobe Connect 9.7 and earlier CVSS 3.0CRITICAL 9.1
See all 82 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences