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

DNN (aka DotNetNuke) before 9.1.1 has Remote Code Execution via a cookie, aka "2017-08 (Critical) Possible remote code execution on DNN sites."

01What is this vulnerability?

DNN (aka DotNetNuke) before 9.1.1 has Remote Code Execution via a cookie, aka "2017-08 (Critical) Possible remote code execution on DNN sites."

02Affected products

Vendor	Product	Versions
DotNetNuke	DotNetNuke CMS Fixed in 9.1.1	DotNetNuke CMS Fixed in 9.1.1

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2021-11-03. Ransomware use: Known.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2017-07-20T12:00:00.000Z
• Last modified: 2025-10-21T23:55:36.233Z
• Added to CISA KEV: 2021-11-03
• BOD 22-01 due: 2022-05-03

09References

• www.securityfocus.com — http://www.securityfocus.com/bid/102213
• www.dnnsoftware.com — http://www.dnnsoftware.com/community/security/security-center
• packetstormsecurity.com — http://packetstormsecurity.com/files/157080/DotNetNuke-Cookie-Deserialization-Re…