# CVE-2017-9822: DNN (aka DotNetNuke) has Remote Code Execution via a cookie

Source: https://junglewise.ai/threats/cve-2017-9822-dotnetnuke-dnn-remote-code-execution-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2018-10-16. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2017-9822 · Severity: critical · CVSS 3.1 · Exploited in the wild · Published 2018-10-16

DotNetNuke (DNN) versions prior to 9.1.1 are vulnerable to remote code execution via insecure deserialization of data within a cookie. An attacker can exploit this to execute arbitrary code on the server.

Technologies: [Dotnetnuke (Dnn)](https://junglewise.ai/threats/technologies/dotnetnuke-dnn), [DotNetNuke.Core (NuGet)](https://junglewise.ai/threats/technologies/dotnetnuke-core). Vendors: [Dotnetnuke (Dnn)](https://junglewise.ai/threats/vendors/dotnetnuke-dnn), [NuGet](https://junglewise.ai/threats/vendors/nuget).

## Quick answers

**Is CVE-2017-9822 exploited in the wild?** Yes. CVE-2017-9822 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

**How severe is CVE-2017-9822?** Critical severity, with a CVSS score of 3.1, published 16 October 2018.

**Which products and versions are affected?** DotNetNuke.Core (NuGet) ECOSYSTEM:introduced=0,fixed=9.1.1.

**Is there a fix for CVE-2017-9822?** Yes. DotNetNuke.Core (NuGet): upgrade to 9.1.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2017-9822 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2017-9822?** Check whether you run Dotnetnuke (Dnn) or DotNetNuke.Core (NuGet) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- DotNetNuke.Core (NuGet): upgrade to 9.1.1 or later

  ```sh
  dotnet add package DotNetNuke.Core --version 9.1.1
  ```


## Affected products

- DNN Software DotNetNuke (DNN) before 9.1.1

## Identifiers

- CVE-2017-9822
- GHSA-x2rg-fmcv-crq5

## Timeline

- 2017-07-21: disclosed: Initial vendor advisory/description update
- 2017-07-25: other: Initial NIST analysis completed
- 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2022-05-03: other: Due date for remediation per CISA BOD 22-01

## Related threats

- [DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload](https://junglewise.ai/threats/cve-2026-40321-dotnetnuke-core-has-stored-cross-site-scripting-xss-via-svg)
- [DNN: Same HostGUID for all new installs](https://junglewise.ai/threats/cve-2026-40306-dnn-same-hostguid-for-all-new-installs)
- [DNN: Force Friend Request Acceptance](https://junglewise.ai/threats/cve-2026-40305-dnn-force-friend-request-acceptance)
- [DNN DotNetNuke.Core insecure XML processing and weak cryptography](https://junglewise.ai/threats/dnn-dotnetnuke-core-insecure-xml-processing-and-weak-cryptography-fd6489d4)
- [DotNetNuke.Core Vulnerable to Stored XSS via Module Title](https://junglewise.ai/threats/cve-2026-24838-dotnetnuke-core-vulnerable-to-stored-xss-via-module-title)