Mailessentials vulnerabilitiesRanked by how likely they are to be used.
Mailessentials is made by Gfi. We track 4 published vulnerabilities in it, across 16 versions. None of them is on the list of flaws known to be exploited today. If you run Mailessentials, keep it on a version the vendor still supports.
We keep watching the known-exploited list.
Which Mailessentials vulnerabilities are being exploited?
This is the list that matters most: flaws criminals are using now.
None of Mailessentials's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.
Which Mailessentials flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 2.5%CVE-2004-1312Critical
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...
- 0.9%CVE-2025-34491High
GFI MailEssentials prior to version 21.8 is vulnerable to a .NET deserialization issue.
- 0.7%CVE-2025-34490Medium
GFI MailEssentials prior to version 21.8 is vulnerable to an XML External Entity (XXE) issue.
- 0.3%CVE-2025-34489High
GFI MailEssentials prior to version 21.8 is vulnerable to a local privilege escalation issue.
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1 new flaw affects software Acme tracks
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.
- Matched to
- Mailessentials on Acme's software list
- What to do
- Plan in the vendor’s update
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 4 published vulnerabilities listed under the name Mailessentials, across 16 versions.
None of Mailessentials's vulnerabilities is on the list of flaws known to be exploited today.
Create a Precursor Intelligence account and track Mailessentials. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.