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I. Basic Information for CVE-2025-52691
Vulnerability Information

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Vulnerability Title
Upload Arbitrary Files
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
SmarterTools SmarterMail 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SmarterTools SmarterMail是SmarterTools公司的一套邮件服务器软件。该软件支持垃圾邮件过滤、数据统计、简单邮件传输协议SMTP验证等功能。 SmarterTools SmarterMail存在安全漏洞,该漏洞源于未经验证的攻击者可上传任意文件,可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
SmarterToolsSmarterMail SmarterMail versions Build 9406 and earlier -
II. Public POCs for CVE-2025-52691
#POC DescriptionSource LinkShenlong Link
1Mail server contains an unrestricted file upload vulnerability allowing unauthenticated attackers to upload arbitrary files to any location, potentially enabling remote code execution. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-52691.yamlPOC Details
2Nonehttps://github.com/yt2w/CVE-2025-52691POC Details
3Detection for CVE-2025-52691https://github.com/rxerium/CVE-2025-52691POC Details
4CVE-2025-52691https://github.com/Ashwesker/Ashwesker-CVE-2025-52691POC Details
5This repository contains a safe Proof of Concept (PoC) to detect vulnerable SmarterMail versions affected by CVE‑2025‑52691. The script performs version detection only and does not exploit the vulnerability.https://github.com/you-ssef9/CVE-2025-52691POC Details
6An enhanced proof-of-concept exploit for CVE-2025-52691 (SmarterMail Arbitrary File Upload RCE) with APT-level features like stealth obfuscation, persistence, exfiltration, and interactive mode. For educational and authorized testing only. Credits to the original PoC by yt2w/CVE-2025-52691.https://github.com/DeathShotXD/CVE-2025-52691-APT-PoCPOC Details
7Nonehttps://github.com/sajjadsiam/CVE-2025-52691-pocPOC Details
8CVE‑2025‑52691 - SmarterMail Arbitrary File Upload Vulnerabilityhttps://github.com/hilwa24/CVE-2025-52691POC Details
9CVE-2025-52691 Scanner - Detects vulnerable SmarterMail installations (CVSS 10.0 RCE)https://github.com/nxgn-kd01/smartermail-cve-scannerPOC Details
10Nonehttps://github.com/watchtowrlabs/watchTowr-vs-SmarterMail-CVE-2025-52691POC Details
11Nonehttps://github.com/rimbadirgantara/CVE-2025-52691-pocPOC Details
12CVE-2025-52691https://github.com/mohammadzarnian1357/Ashwesker-CVE-2025-52691POC Details
13CVE-2025-52691 PoC: Based on watchtowr's article WT-2026-0001 about an authentication bypass exploit, this one is a functional Python attack script.https://github.com/ninjazan420/CVE-2025-52691-PoC-SmarterMail-authentication-bypass-exploit-WT-2026-0001POC Details
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III. Intelligence Information for CVE-2025-52691
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