CVE-2017-9822VulnerabilityPublished 11/03/2021Updated 10/24/2026

CVE-2017-9822: DotNetNuke (DNN) Remote Code Execution Vulnerability

Affects DotNetNuke (DNN) DotNetNuke (DNN)Source CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 11/03/2021
KEV deadline: 05/03/2022
Ransomware: Used in ransomware campaigns
EPSS: 94.8% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2017-9822 (opens in a new tab)

Description

DotNetNuke (DNN) has a remote code execution vulnerability due to unsafe cookie deserialization. This vulnerability has been exploited in the wild and is known to be used in ransomware campaigns. No specific affected versions or patch information is provided.

Summary

CVE-2017-9822 is a remote code execution vulnerability in DotNetNuke (DNN) caused by insecure deserialization of cookies. This flaw allows attackers to execute arbitrary code remotely by manipulating cookie data. The vulnerability has been observed in active exploitation scenarios, including ransomware campaigns targeting affected systems.

Impact

Successful exploitation enables remote attackers to execute arbitrary code on affected DotNetNuke installations, potentially leading to full system compromise. The vulnerability has been exploited in the wild and is associated with ransomware campaigns, indicating significant operational and security risks.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the affected application and monitor for suspicious activity related to cookie manipulation.

Weaknesses

CWE-20Improper Input Validation (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 09:27:00 UTC

Weaknesses

References

Related threats