Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GFI | MailEssentials | < 21.8 | 21.8 |
References
- https://frycos.github.io/vulns4free/2025/04/28/mailessentials.html exploit technical-description
- https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases vendor-advisory
- https://www.vulncheck.com/advisories/gfi-mailessentials-xxe-arbitrary-file-read third-party-advisory