{"id":"CVE-2018-15811","published":"2019-07-03T17:15:10Z","modified":"2026-06-17T01:43:08Z","title":"DotNetNuke (DNN) Inadequate Encryption Strength Vulnerability","vendor":"DotNetNuke (DNN)","product":"DotNetNuke (DNN)","tier":"core","eol":null,"description":{"text":"DNN (aka DotNetNuke) 9.2 through 9.2.1 uses a weak encryption algorithm to protect input parameters.","provenance":"source","from":"NVD"},"summary":{"text":"DotNetNuke (DNN) versions 9.2 through 9.2.1 contain an inadequate encryption strength flaw, in which a weak encryption algorithm is used to protect input parameters. An attacker with network access can exploit this without authentication or user interaction to compromise the confidentiality of the protected data.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:11:01Z"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","provenance":"source","from":"NVD"},"epss":{"score":0.76304,"percentile":0.99537,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2018-15811","provenance":"source"},"vulncheckKev":{"dateAdded":"2021-11-03","exploitedFirstSeen":"2021-11-03","ransomware":false,"evidence":[{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2021-11-03"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-24&host_type=src&vulnerability=cve-2018-15811","date":"2026-09-24"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-25&host_type=src&vulnerability=cve-2018-15811","date":"2026-09-25"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-26&host_type=src&vulnerability=cve-2018-15811","date":"2026-09-26"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-27&host_type=src&vulnerability=cve-2018-15811","date":"2026-09-27"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-28&host_type=src&vulnerability=cve-2018-15811","date":"2026-09-28"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-29&host_type=src&vulnerability=cve-2018-15811","date":"2026-09-29"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-30&host_type=src&vulnerability=cve-2018-15811","date":"2026-09-30"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-10-01&host_type=src&vulnerability=cve-2018-15811","date":"2026-10-01"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-10-02&host_type=src&vulnerability=cve-2018-15811","date":"2026-10-02"}],"evidenceTotal":18,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-326","name":"Inadequate Encryption Strength"}],"references":[{"url":"http://packetstormsecurity.com/files/157080/DotNetNuke-Cookie-Deserialization-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://github.com/dnnsoftware/Dnn.Platform/releases","tags":["Release Notes"]},{"url":"https://www.dnnsoftware.com/community/security/security-center","tags":["Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/157080/DotNetNuke-Cookie-Deserialization-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://github.com/dnnsoftware/Dnn.Platform/releases","tags":["Release Notes"]},{"url":"https://www.dnnsoftware.com/community/security/security-center","tags":["Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-15811","tags":["US Government Resource"]}],"techniques":[],"reports":[],"affected":[{"ecosystem":"NuGet","package":"DotNetNuke.Core","vulnerableRanges":[">=9.2.0, <9.2.2"],"patched":["9.2.2"],"from":["GHSA-h595-8pw6-5q6v"],"provenance":"source"}],"advisories":[{"id":"GHSA-h595-8pw6-5q6v","url":"https://github.com/advisories/GHSA-h595-8pw6-5q6v","severity":"HIGH","ecosystem":"NuGet","package":"DotNetNuke.Core","vulnerableRanges":[">=9.2.0, <9.2.2"],"patched":["9.2.2"],"provenance":"source","from":"GHSA"}],"euvd":{"id":"EUVD-2019-0590","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-0590","exploited":true,"exploitedSince":"2021-11-03","provenance":"source"},"exploits":[{"id":48336,"url":"https://www.exploit-db.com/exploits/48336","title":"DotNetNuke - Cookie Deserialization Remote Code Execution (Metasploit)","type":"remote","platform":"windows","date":"2020-04-16","verified":true,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":1,"earliest":"2020-04-16"},"metasploit":[{"name":"DotNetNuke Cookie Deserialization Remote Code Excecution","module":"exploit/windows/http/dnn_cookie_deserialization_rce","type":"exploit","disclosureDate":"2017-07-20","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/dnn_cookie_deserialization_rce.rb"}],"nuclei":[{"id":"CVE-2018-15811","name":"DotNetNuke 9.2 - 9.2.1 - Weak Encryption & Cookie Deserialization","severity":"high","path":"http/cves/2018/CVE-2018-15811.yaml","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2018/CVE-2018-15811.yaml"}],"first":{"date":"2017-07-20","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/dnn_cookie_deserialization_rce.rb"},"provenance":"source"},"exploitRefs":["http://packetstormsecurity.com/files/157080/DotNetNuke-Cookie-Deserialization-Remote-Code-Execution.html"],"flow":[],"timeline":[{"date":"2017-07-20","kind":"exploit-public","label":"First public exploit: Metasploit; later: Exploit-DB 2020-04-16","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/dnn_cookie_deserialization_rce.rb","provenance":"source"},{"date":"2019-07-03","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-15811","provenance":"source"},{"date":"2021-11-03","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","provenance":"source"},{"date":"2021-11-03","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2021-11-03","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-0590","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":"Metasploit","daysToKev":854},"priority":{"score":68.2,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 1823 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.91,"detail":"percentile 0.9954"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD reference tagged Exploit; 1 Exploit-DB entry; 1 Metasploit module; 1 nuclei template"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.25,"detail":"base score 7.5"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-dotnetnuke-dnn-cve-2018-15811","children":[{"from":"CVE-2018-15811","to":"CVE-2018-18325","relation":"incomplete-fix","confidence":"high","kind":"lineage","orderedBy":"description","evidence":[{"kind":"text","provenance":"source","relation":"incomplete-fix","quote":"NOTE: this issue exists because of an incomplete fix for CVE-2018-15811.","from":"NVD","in":"CVE-2018-18325"},{"kind":"similar","provenance":"machine","score":0.94,"basis":"same product + CWE + description similarity"}]}],"packageHistory":[{"cve":"CVE-2016-7119","published":"2016-08-31","fixed":"8.0.1","kev":false},{"cve":"CVE-2017-9822","published":"2017-07-20","fixed":"9.1.1","kev":true},{"cve":"CVE-2017-0929","published":"2018-07-03","fixed":"9.2.0","kev":false,"link":{"from":"CVE-2017-0929","to":"CVE-2018-15811","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"NuGet:DotNetNuke.Core","fromFixed":"9.2.0","toFixed":"9.2.2","daysApart":365}]}},{"cve":"CVE-2018-15811","published":"2019-07-03","fixed":"9.2.2","kev":true},{"cve":"CVE-2018-15812","published":"2019-07-03","fixed":"9.2.2","kev":false},{"cve":"CVE-2018-18325","published":"2019-07-03","fixed":"9.3.0","kev":true},{"cve":"CVE-2018-18326","published":"2019-07-03","fixed":"9.3.0","kev":false}],"package":"NuGet:DotNetNuke.Core"}}