CVE-2025-52691
CriticalPublished
Upload Arbitrary Files
- Published
- Dec 29, 2025
- Updated
- Feb 26, 2026
- Assigning CNA
- CSA
- Evidence observed
- Jan 26, 2026
Primary CVSS
10.0/ 10Critical
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H85.7%
High · next 30 days
- Percentile
- 99.7%
- Model date
- Oct 15, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
Successful exploitation of the vulnerability could allow an unauthenticated attacker to upload arbitrary files to any location on the mail server, potentially enabling remote code execution.
Sources
Repository evidence: Files: 2 · Repositories: 2
1 Module1 Template
modules/exploits/multi/http/smartermail_guid_file_upload.rb
Metasploit Framework modulesDeclared conditions
- platform: Linux,Unix,Windows($.exploit_multi/http/smartermail_guid_file_upload.platform)
- verification: check_declared($.exploit_multi/http/smartermail_guid_file_upload.check)
http/cves/2025/CVE-2025-52691.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: status,word($.matchers[*].type)
Responsible use
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