CVE-2025-34490 json
GFI MailEssentials < 21.8 XXE Arbitrary File Read
published 2025-04-28 18 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-14684
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- GFI MailEssentials 21.8
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- frycos.github.io https://frycos.github.io/vulns4free/2025/04/28/mailessentials.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected products
- GFI MailEssentials
Classification
- Weakness
-
- CWE-611 Improper Restriction of XML External Entity Reference
References
-
frycos.github.io
/vulns4free/2025/04/28/mailessentials.html
exploit, technical-description
-
gfi.ai
/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases
vendor-advisory, release-notes
-
vulncheck.com
/advisories/gfi-mailessentials-xxe-arbitrary-file-read
third-party-advisory
Sources
- CVE List CVE-2025-34490
- NVD CVE-2025-34490
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