Libraesva Email Security Gateway Command Injection Vulnerability

Technical Severity

CVSS v3.1 Metrics

MEDIUM

6.1 / 10

Minimal Risk Critical

Vector Specification

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

Exploitation Likelihood

EPSS Prediction

5.18 %

Predictive Probability

Percentile Rank

89.7 th

Documented as more likely to be exploited than 89.7% of known CVEs.

Detection Date

Sep 29, 2025

Remediation Due

Oct 20, 2025

CISA Catalog Active

Threat Analysis

Libraesva Email Security Gateway (ESG) contains a command injection vulnerability which allows command injection via a compressed e-mail attachment.

Remediation Directive

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

Asset Context

Vendor Identity

Libraesva

Affected Product

Email Security Gateway

Ransomware Status

Campaign Use Unknown

Weakness Classification

CWE-77

External Intelligence

https://docs.libraesva.com/knowledgebase/security-advisory-command-injection-vulnerability-cve-2025-59689/

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2025-59689