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Gfi Mailessentials CVEs.

Published CVEs affecting Gfi Mailessentials, ranked by exploit odds.

22 CVEs · updated 2026-11-06 21:21 UTC

  1. CVE-2004-1312

    A bug in the HTML parser in a certain Microsoft HTML library, as used in various third party products, may allow remote attackers to cause a denial of service via certain strings, as reported in GFI MailEssentials for Exchange 9 and 10, and GFI MailSecurity for Exchange 8, which causes emails to remain in IIS or Exchange mail queues.

    Gfi Mailessentials

    10.0 HIGH 2% exploit odds Fix listed
  2. CVE-2025-34491

    GFI MailEssentials prior to version 21.8 is vulnerable to a .NET deserialization issue. A remote and authenticated attacker can execute arbitrary code by sending crafted serialized .NET when joining to a Multi-Server setup.

    Code execution Server Gfi Mailessentials

    8.8 HIGH 1.0% exploit odds No fix listed
  3. CVE-2025-34490

    GFI MailEssentials prior to version 21.8 is vulnerable to an XML External Entity (XXE) issue. An authenticated and remote attacker can send crafted HTTP requests to read arbitrary system files.

    Disclosure Server Gfi Mailessentials

    6.5 MEDIUM 0.7% exploit odds No fix listed
  4. CVE-2025-34489

    GFI MailEssentials prior to version 21.8 is vulnerable to a local privilege escalation issue. A local attacker can escalate to NT Authority/SYSTEM by sending a crafted serialized payload to a .NET Remoting Service.

    Code execution Gfi Mailessentials

    7.8 HIGH 0.3% exploit odds No fix listed
  5. CVE-2026-23621

    GFI MailEssentials AI versions prior to 22.4 contain an arbitrary directory existence enumeration vulnerability in the ListServer.IsPathExist() web method exposed at /MailEssentials/pages/MailSecurity/ListServer.aspx/IsPathExist. An authenticated user can supply an unrestricted filesystem path via the JSON key \"path\", which is URL-decoded and passed to Directory.Exists(), allowing the attacker to determine whether arbitrary directories exist on the server.

    Other Server Gfi Mailessentials

    5.3 MEDIUM 0.3% exploit odds No fix listed
  6. CVE-2026-23620

    GFI MailEssentials AI versions prior to 22.4 contain an arbitrary file existence enumeration vulnerability in the ListServer.IsDBExist() web method exposed at /MailEssentials/pages/MailSecurity/ListServer.aspx/IsDBExist. An authenticated user can supply an unrestricted filesystem path via the JSON key \"path\", which is URL-decoded and passed to File.Exists(), allowing the attacker to determine whether arbitrary files exist on the server.

    Other Server Gfi Mailessentials

    5.3 MEDIUM 0.2% exploit odds No fix listed
  7. CVE-2026-23604

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Keyword Filtering rule creation workflow. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$TXB_RuleName parameter to /MailEssentials/pages/MailSecurity/contentchecking.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  8. CVE-2026-23605

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Attachment Filtering rule creation workflow. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$TXB_RuleName parameter to /MailEssentials/pages/MailSecurity/attachmentchecking.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  9. CVE-2026-23606

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Advanced Content Filtering rule creation workflow. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$txtRuleName parameter to /MailEssentials/pages/MailSecurity/advancedfiltering.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  10. CVE-2026-23607

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Anti-Spam Whitelist management interface. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$txtDescription parameter to /MailEssentials/pages/MailSecurity/Whitelist.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  11. CVE-2026-23608

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Mail Monitoring rule creation endpoint. An authenticated user can supply HTML/JavaScript in the JSON \"name\" field to /MailEssentials/pages/MailSecurity/MailMonitoring.aspx/Save, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  12. CVE-2026-23609

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Perimeter SMTP Servers configuration page. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv3$txtDescription parameter to /MailEssentials/pages/MailSecurity/PerimeterSMTPServers.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  13. CVE-2026-23610

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the POP2Exchange configuration endpoint. An authenticated user can supply HTML/JavaScript in the POP3 server login field within the JSON \"popServers\" payload to /MailEssentials/pages/MailSecurity/POP2Exchange.aspx/Save, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Server Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  14. CVE-2026-23611

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the IP Blocklist management page. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$txtIPDescription parameter to /MailEssentials/pages/MailSecurity/ipblocklist.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  15. CVE-2026-23612

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the IP DNS Blocklist configuration page. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$TXB_IPs parameter to /MailEssentials/pages/MailSecurity/ipdnsblocklist.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  16. CVE-2026-23614

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Sender Policy Framework IP Exceptions interface. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv2$txtIPDescription parameter to /MailEssentials/pages/MailSecurity/SenderPolicyFramework.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  17. CVE-2026-23616

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Anti-Spoofing configuration page. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$AntiSpoofingGeneral1$TxtSmtpDesc parameter to /MailEssentials/pages/MailSecurity/AntiSpoofing.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  18. CVE-2026-23617

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Spam Keyword Checking (Body) conditions interface. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pvGeneral$TXB_Condition parameter to /MailEssentials/pages/MailSecurity/ASKeywordChecking.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  19. CVE-2026-23618

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Spam Keyword Checking (Subject) conditions interface. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pvSubject$TXB_SubjectCondition parameter to /MailEssentials/pages/MailSecurity/ASKeywordChecking.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  20. CVE-2026-23619

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Local Domains settings page. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$Pv3$txtDescription parameter to /MailEssentials/pages/MailSecurity/general.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  21. CVE-2026-23613

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the URI DNS Blocklist configuration page. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$TXB_URIs parameter to /MailEssentials/pages/MailSecurity/uridnsblocklist.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed
  22. CVE-2026-23615

    GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Sender Policy Framework Email Exceptions interface. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv4$txtEmailDescription parameter to /MailEssentials/pages/MailSecurity/SenderPolicyFramework.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

    XSS Gfi Mailessentials

    5.1 MEDIUM 0.2% exploit odds No fix listed

All CVEs affecting Gfi Mailessentials that appear in CVE.org and NVD, sorted by how likely they are to be exploited (EPSS), with fix status and timeline.