CVE-2025-52691

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.

CVSS 3.1

10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

86% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-25)

CISA KEV

listed 2026-01-26, due 2026-02-16, known ransomware use

CWE

CWE-434

Published

2025-12-29

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

Affected

• smartertools:smartermail

References

• https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2025-124/
• https://github.com/watchtowrlabs/watchTowr-vs-SmarterMail-CVE-2025-52691?ref=labs.watchtowr.com
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-52691

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