CVE-2023-26359KEV · OVERDUECWE-502

Adobe ColdFusion Deserialization of Untrusted Data Arbitrary code execution

Critical · published March 23, 2023

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 97.1th percentile for exploit probability.

1139
days past CISA
deadline
CVSS v3.1
9.8
EPSS
17%
Percentile
97.1
In the wild
Confirmed
What it is

🔥 A sneaky deserialization flaw in Adobe ColdFusion lets attackers execute arbitrary code without breaking a sweat—users don’t even need to lift a finger! Think of it like a restaurant accepting a delivery without checking the order. If the kitchen doesn't verify what's inside the package, they might end up serving a dangerous surprise that poisons the whole dining experience! An attacker could take complete control of the application, leading to catastrophic consequences—everything from stealing sensitive data to disrupting services could happen! This vulnerability is particularly alarming because it exploits the current user's privileges, which means any unsuspecting user could unwittingly open the door to disaster.

Put simply

Think of it like a restaurant accepting a delivery without checking the order. If the kitchen doesn't verify what's inside the package, they might end up serving a dangerous surprise that poisons the whole dining experience! This vulnerability arises from the deserialization of untrusted data in Adobe ColdFusion, which allows attackers to send malicious data that the application will execute as code, effectively carrying out their wishes within the context of the logged-in user.

What to do

An attacker could take complete control of the application, leading to catastrophic consequences—everything from stealing sensitive data to disrupting services could happen! This vulnerability is particularly alarming because it exploits the current user's privileges, which means any unsuspecting user could unwittingly open the door to disaster. Immediate patching is crucial! Update ColdFusion to version 2018 Update 16 or 2021 Update 6 to close this vulnerability. Additionally, review your configurations and ensure that your application has strict controls on deserialized data to prevent future exploits. You’ve got this! Follow these steps, and you’ll be turning this vulnerability into a distant memory. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.16988 · 97.1th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2023-03-23T00:00Z
KEV added
2023-08-21 · due 2023-09-11
EPSS history
Timeline
  • 21 AUG 00:00Z
    Added to CISA KEV — remediate by Sep 11
    kev
  • 23 MAR 00:00Z
    Adobe ColdFusion Deserialization of Untrusted Data Arbitrary code execution
    cvelistv5