What is CVE-2017-9822?

CVE-2017-9822 is a high-severity vulnerability in Dnnsoftware Dotnetnuke, classified under Code Injection. CVSS score: 8.8/10. Published 2017-07-20.

How severe is CVE-2017-9822?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2017-9822 known to be exploited?

Yes. CVE-2017-9822 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 45 public proof-of-concept repositories are indexed.

RCE in Dnnsoftware Dotnetnuke

CVE-2017-9822

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."

Vulnerability class: RCE (Remote Code Execution)

Published 2017-07-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.948 (99.9th percentile), scored 2026-10-15.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.948 · newest: 0.948 · change: 0.000

Affected products

Dnnsoftware Dotnetnuke
Dotnetnuke Cms Fixed In 9.1.1 — versions DotNetNuke CMS Fixed in 9.1.1

Weakness classification (CWE)

CWE-94 — Code Injection

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-05-03.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

www.securityfocus.com/bid/102213 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
www.dnnsoftware.com/community/security/security-center (Product, Vendor Advisory)
packetstormsecurity.com/files/157080/DotNetNuke-Cookie-Deserialization-Remote-C… (Exploit, VDB Entry, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2017-9822?: CVE-2017-9822 is a high-severity vulnerability in Dnnsoftware Dotnetnuke, classified under Code Injection. CVSS score: 8.8/10. Published 2017-07-20.
How severe is CVE-2017-9822?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2017-9822 known to be exploited?: Yes. CVE-2017-9822 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 45 public proof-of-concept repositories are indexed.