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CVE-2025-52691

98
FAUCET Score

CVE-2025-52691 is a critical arbitrary file upload vulnerability affecting SmarterTools SmarterMail, allowing unauthenticated attackers to upload files to any server location, potentially leading to remote code execution. With a CVSS score of 10.0, it presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. This vulnerability is actively exploited in the wild, with public exploit modules available in Metasploit and Nuclei, and has garnered significant community discussion and media coverage, indicating widespread awareness and ongoing threat.

Impacted Technologies

VendorProductVersion(s)CPE
< 100.0.9413CPE matchmatch criteria
cpe:2.3:a:smartertools:smartermail:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

10.0CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
85.46%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Added to KEV · Jan 26, 2026
Metasploit: SmarterTools SmarterMail GUID File Upload Vulnerability · Oct 9, 2025
Nuclei: CVE-2025-52691 · Jan 9, 2026
This CVE's current EPSS score of 0.8546 is in the 99th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / watchtowrlabs/watchTowr-vs-SmarterMail-CVE-2025-52691
ExploitThird Party Advisory
cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
csa.gov.sg / alerts-and-advisories/alerts/al-2025-124
Third Party Advisory