{"id":"CVE-2021-31474","published":"2021-05-21T14:40:15Z","modified":"2024-08-03T23:03:32Z","title":"This vulnerability allows remote attackers to execute arbitrary code on affected installations of SolarWinds Network…","vendor":"SolarWinds","product":"Network Performance Monitor","tier":"core","eol":null,"affectedVersions":[{"vendor":"SolarWinds","product":"Network Performance Monitor","versions":["2020.2.1"]}],"description":{"text":"This vulnerability allows remote attackers to execute arbitrary code on affected installations of SolarWinds Network Performance Monitor 2020.2.1. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SolarWinds.Serialization library. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-12213.","provenance":"source","from":"CVE.org"},"summary":{"text":"The flaw is in the SolarWinds.Serialization library of SolarWinds Network Performance Monitor, caused by a lack of proper validation of user-supplied data that leads to deserialization of untrusted data. An remote attacker who needs no authentication or user interaction can exploit it over the network to execute code in the context of SYSTEM.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:13:50Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.93939,"percentile":0.99844,"date":"2026-10-29","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":1,"pulses":[{"name":"Proof Point Emerging Exploit list","url":"https://otx.alienvault.com/pulse/6399fdc966948f6b537b9762","created":"2022-12-14"}],"provenance":"machine"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-602/","tags":["x_refsource_MISC"]},{"url":"https://documentation.solarwinds.com/en/success_center/sam/content/release_notes/sam_2020-2-5_release_notes.htm","tags":["x_refsource_MISC"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2021-18374","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-18374","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2021-05-21","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2021-31474","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":27.5,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.97,"detail":"percentile 0.9984"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.68,"detail":"1 pulse"},{"name":"CVSS severity","points":6.86,"detail":"base score 9.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}