CVE-2017-9822
HighExploitedPublic exploitDNN (aka DotNetNuke) has Remote Code Execution via a cookie
Published Oct 16, 2018 · Updated Jul 8, 2026 · Also known as GHSA-x2rg-fmcv-crq5
Key Facts
Patch immediately- CVE-2017-9822 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Dotnetnuke (Dnnsoftware), DotNetNuke.Core (nuget), DotNetNuke CMS Fixed in 9.1.1.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 21, 2021 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 95% probability of exploitation in the next 30 days.
- Fixed versions are available, including Dotnetnuke 9.1.1, DotNetNuke.Core 9.1.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
95%
Higher than 99.8% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2017-9822 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 3, 2021 | May 3, 2022 | Known |
| Industry KEV feed | Jan 21, 2021 | May 3, 2022 | Known |
| CIRCL KEV | Nov 3, 2021 | May 3, 2022 | Known |
| ENISA EUVD | Nov 3, 2021 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| DotnetnukeDnnsoftware | See advisory | 9.1.1 |
| DotNetNuke.Corenuget | See advisory | 9.1.1 |
| DotNetNuke CMS Fixed in 9.1.1 | >= DotNetNuke CMS Fixed in 9.1.1 | n/a |
Patched Releases
Dotnetnuke
9.1.1
DotNetNuke.Core
9.1.1
Timeline
Publicly disclosed
Oct 16, 2018
Added to Industry KEV feed
Jan 21, 2021
Added to CISA KEV
Nov 3, 2021
Added to CIRCL KEV
Nov 3, 2021
Added to ENISA EUVD
Nov 3, 2021
Last updated
Jul 8, 2026
Weakness Type
- CWE-20 Improper Input Validation
- CWE-94 Improper Control of Generation of Code ('Code Injection')
References
- advisoryGHSA advisory
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2017-9822
- exploitMSF dnn_cookie_deserialization_rce.rb
- exploitVulnCheck exploitation report
- exploitExploitDB-48336
FAQ
Common Questions.
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."
Affected: Dotnetnuke (Dnnsoftware); DotNetNuke.Core (nuget); DotNetNuke CMS Fixed in 9.1.1 versions >= DotNetNuke CMS Fixed in 9.1.1. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 21, 2021 and is known to be used in ransomware campaigns.
Yes. It was added on Nov 3, 2021 with a federal remediation due date of May 3, 2022.
Public exploit code is available.
Fixed versions are available, including Dotnetnuke 9.1.1, DotNetNuke.Core 9.1.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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