CVE-2025-52691Upload Arbitrary Files

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.

10.0 CRITICALEPSS 85.65%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-10-07 12:10 UTC

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
10.0	CRITICAL	3.1CSA (CNA)	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CISA required action

⚡ Known exploited · remediation due Feb 16, 2026

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Details

CVE ID: CVE-2025-52691
Status: Analyzed
Assigner (CNA): CSA
Published: Dec 29, 2025
Last modified: 2026-10-07 12:10 UTC
Weaknesses: CWE-434

Sources

NVD
CVE.org
CISA KEV
FIRST EPSS

Refreshed hourly from the sources above. Last fetched 2026-11-07 16:30 UTC.