{"id":"CVE-2020-0688","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-0688","generatedAt":"2026-10-31T17:27:12.479Z","title":"Microsoft Exchange Server Validation Key Remote Code Execution Vulnerability","description":"A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Memory Corruption Vulnerability'.","published":"2020-02-11T22:15:16.000Z","lastModified":"2026-06-17T02:46:21.000Z","status":"Analyzed","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-287"],"affected":["microsoft/exchange server"],"epss":{"score":0.99955,"percentile":0.99974,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2021-11-03","dueDate":"2022-05-03","knownRansomwareCampaignUse":"Known","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-0688"},"exploits":{"count":2,"verified":true,"firstPublished":"2020-03-02","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":48168,"kind":"exploit","title":"Exchange Control Panel - Viewstate Deserialization (Metasploit)","url":"https://www.exploit-db.com/exploits/48168","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/remote/48168.rb","file":"exploits/windows/remote/48168.rb","published":"2020-03-05","added":"2020-03-05","updated":"2020-03-05","author":"Metasploit","type":"remote","platform":"windows","port":443,"verified":true,"codes":["CVE-2020-0688"],"tags":"Metasploit Framework (MSF)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/exchange_ecp_viewstate.rb"},{"edbId":48153,"kind":"exploit","title":"Microsoft Exchange 2019 15.2.221.12 - Authenticated Remote Code Execution","url":"https://www.exploit-db.com/exploits/48153","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/remote/48153.py","file":"exploits/windows/remote/48153.py","published":"2020-03-02","added":"2020-03-02","updated":"2020-03-02","author":"Photubias","type":"remote","platform":"windows","port":null,"verified":false,"codes":["CVE-2020-0688"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/156592/Microsoft-Exchange-2019-15.2.221.12-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://packetstormsecurity.com/files/156620/Exchange-Control-Panel-Viewstate-Deserialization.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-258/","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://packetstormsecurity.com/files/156592/Microsoft-Exchange-2019-15.2.221.12-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/156620/Exchange-Control-Panel-Viewstate-Deserialization.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-258/","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0688","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-0688","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}