CVE-2025-59689

6.1

MEDIUM CVSS 3.1

Libraesva Email Security Gateway Command Injection Vulnerability - [Actively Exploited]

Description

Libraesva ESG 4.5 through 5.5.x before 5.5.7 allows command injection via a compressed e-mail attachment. For ESG 5.0 a fix has been released in 5.0.31. For ESG 5.1 a fix has been released in 5.1.20. For ESG 5.2 a fix has been released in 5.2.31. For ESG 5.4 a fix has been released in 5.4.8. For ESG 5.5. a fix has been released in 5.5.7.

INFO

Published Date :

Sept. 19, 2025, 8:15 p.m.

Last Modified :

Oct. 21, 2025, 11:17 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]

CISA Notification

CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Due Date: Oct 20, 2025

Alert Date: Sep 29, 2025 | 32 days ago

Description :

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

Required Action :

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

Notes :

https://docs.libraesva.com/knowledgebase/security-advisory-command-injection-vulnerability-cve-2025-59689/ ; https://nvd.nist.gov/vuln/detail/CVE-2025-59689

Affected Products

The following products are affected by CVE-2025-59689 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID	Vendor	Product	Action
1	Libraesva	email_security_gateway

: Total Affected Vendor : 1 | Products : 1

CVSS Scores

The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.

Score	Version	Severity	Vector	Exploitability Score	Impact Score	Source
	CVSS 3.1	MEDIUM				[email protected]

Solution

Update Libraesva ESG to a fixed version to resolve command injection vulnerability.

Update ESG to version 5.0.31 if using 5.0.
Update ESG to version 5.1.20 if using 5.1.
Update ESG to version 5.2.31 if using 5.2.
Update ESG to version 5.4.8 if using 5.4.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-59689.

URL	Resource
https://docs.libraesva.com/knowledgebase/security-advisory-command-injection-vulnerability-cve-2025-59689/	Vendor Advisory
https://www.libraesva.com/security-blog/	Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59689

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-59689 is associated with the following CWEs:

CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-59689 weaknesses.

CAPEC-15: Command Delimiters Command Delimiters CAPEC-40: Manipulating Writeable Terminal Devices Manipulating Writeable Terminal Devices CAPEC-43: Exploiting Multiple Input Interpretation Layers Exploiting Multiple Input Interpretation Layers CAPEC-75: Manipulating Writeable Configuration Files Manipulating Writeable Configuration Files CAPEC-76: Manipulating Web Input to File System Calls Manipulating Web Input to File System Calls CAPEC-136: LDAP Injection LDAP Injection CAPEC-183: IMAP/SMTP Command Injection IMAP/SMTP Command Injection CAPEC-248: Command Injection Command Injection

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-59689 vulnerability anywhere in the article.

Daily CyberSecurity

CL0P Extortion: Google/Mandiant Expose Zero-Day RCE in Oracle E-Business Suite (CVE-2025-61882)

Google Threat Intelligence Group (GTIG) and Mandiant have jointly disclosed an extensive data theft and extortion campaign targeting Oracle E-Business Suite (EBS) environments, linked to threat actors ...

Published Date: Oct 10, 2025 (3 weeks ago)

Daily CyberSecurity

Rapid7 Details Cisco ASA Zero-Day Exploit Chain (CVE-2025-20362 & CVE-2025-20333)

Security researchers at Rapid7 have published a detailed technical analysis uncovering how a pair of zero-day vulnerabilities in Cisco Secure Firewall ASA and FTD software were exploited in-the-wild t ...

Published Date: Oct 07, 2025 (3 weeks, 3 days ago)

CybersecurityNews

CISA Warns of Libraesva ESG Command Injection Vulnerability Actively Exploited in Attacks

In late September 2025, the Cybersecurity and Infrastructure Security Agency (CISA) issued a public alert regarding the active exploitation of a critical command injection vulnerability tracked as CVE ...