CVE-2021-40719CWE-502

Adobe Connect Deserialization of Untrusted Data Remote Code Execution

Critical · published October 21, 2021

CVSS v3.0
9.8
EPSS
4%
Percentile
89.2
In the wild
Unconfirmed
What it is

🔥 A single AMF message could unleash chaos! Adobe Connect versions 11.2.3 and earlier have a deserialization flaw that could let attackers execute code remotely. 🚨 Think of it like letting a stranger back into your home based on a hastily scribbled note. This vulnerability allows harmful data to be treated as trusted, leading to unforeseen consequences, much like trusting an unchecked delivery person into your living room! If exploited, an attacker could take control of the server, running arbitrary code and compromising sensitive data. This means they could potentially access or manipulate anything on the system as if they were an authorized user. The fallout could be absolutely devastating!

Put simply

Think of it like letting a stranger back into your home based on a hastily scribbled note. This vulnerability allows harmful data to be treated as trusted, leading to unforeseen consequences, much like trusting an unchecked delivery person into your living room! This vulnerability arises from the unsafe deserialization of AMF messages on Adobe Connect servers, allowing attackers to invoke methods and run any code they desire remotely, bypassing security measures entirely.

What to do

If exploited, an attacker could take control of the server, running arbitrary code and compromising sensitive data. This means they could potentially access or manipulate anything on the system as if they were an authorized user. The fallout could be absolutely devastating! To protect your system, update Adobe Connect to version 11.2.4 or later immediately. Review your AMF message handling practices to ensure they only process trusted data. Regularly audit your security protocols to seal off any potential weaknesses! You've got this! Stay proactive and secure your Adobe Connect environment today! 🛡️

The record
Technical detail
CVSS v3.0
9.8 · CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.03532 · 89.2th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2021-10-21T19:33Z
EPSS history
Timeline
  • 21 OCT 19:33Z
    Adobe Connect Deserialization of Untrusted Data Remote Code Execution
    cvelistv5