CVEs / CVE-2018-15811

CVE-2018-15811: DotNetNuke (DNN) Inadequate Encryption Strength Vulnerability

Known exploited in the CISA KEV catalog since 3 Nov 2021
high 7.5 CVSS 3.1 (NVD)
EPSS 76.3% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
Last changed at its sources 20 Oct 2026

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Summary

DotNetNuke (DNN) contains an inadequate encryption strength vulnerability resulting from the use of a weak encryption algorithm to protect input parameters.
CISA, Known Exploited Vulnerabilities catalog

Description

DNN (aka DotNetNuke) 9.2 through 9.2.1 uses a weak encryption algorithm to protect input parameters.
The CVE record, via NVD · published 3 Jul 2019 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
n/a n/a	n/a	—

As stated by OSV
Product	Affected	Fixed in
DotNetNuke.Core (NuGet)	from 9.2.0, before 9.2.2	9.2.2

Package versions from GHSA-h595-8pw6-5q6v.

Exploitation

In CISA KEV since	3 Nov 2021
Due date for US federal agencies	3 May 2022
Used in ransomware campaigns	Unknown
Required action	Apply updates per vendor instructions.

Severity

CVSS 3.1	7.5 high `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N` Scored by NVD
Weakness	CWE-326

References

CVE-2018-15811 on NVD
CVE-2018-15811 in the CISA KEV catalog
CVE-2018-15811 on OSV
http://packetstormsecurity.com/files/157080/DotNetNuke-Cookie-Deserialization-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
https://github.com/dnnsoftware/Dnn.Platform/releases Release Notes
https://www.dnnsoftware.com/community/security/security-center Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-15811 US Government Resource

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.