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Known Exploited Vulnerability
6.1
MEDIUM CVSS 3.1
CVE-2025-59689
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 :

Sept. 30, 2025, 2:31 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.

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
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:

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.

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)

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Published Date: Oct 10, 2025 (12 hours, 55 minutes ago)
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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 ... Read more

Published Date: Oct 07, 2025 (3 days, 15 hours 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 ... Read more

Published Date: Sep 30, 2025 (1 week, 2 days ago)
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Published Date: Sep 29, 2025 (1 week, 4 days ago)
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Akira Ransomware Exploits SonicWall VPN Accounts With Lightning-Fast Intrusions

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Published Date: Sep 29, 2025 (1 week, 4 days ago)
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Published Date: Sep 29, 2025 (1 week, 4 days ago)
  • Daily CyberSecurity
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Published Date: Sep 29, 2025 (1 week, 4 days ago)
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Published Date: Sep 29, 2025 (1 week, 4 days ago)
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Published Date: Sep 28, 2025 (1 week, 5 days ago)
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Published Date: Sep 28, 2025 (1 week, 5 days ago)
  • Daily CyberSecurity
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The Formbricks project, an open-source platform for building in-app and website surveys, has released an urgent patch addressing a critical authentication vulnerability. Tracked as CVE-2025-59934 with ... Read more

Published Date: Sep 27, 2025 (1 week, 6 days ago)
  • Daily CyberSecurity
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Published Date: Sep 27, 2025 (1 week, 6 days ago)
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Published Date: Sep 26, 2025 (2 weeks ago)
  • Daily CyberSecurity
CRITICAL Cisco Zero-Day (CVE-2025-20333, CVSS 9.9) Under Active Attack: VPN Flaw Allows Root RCE

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Published Date: Sep 26, 2025 (2 weeks ago)
  • Daily CyberSecurity
Cisco Warns of Critical RCE Flaw (CVE-2025-20363) Affecting Firewall and Router Software

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Published Date: Sep 26, 2025 (2 weeks ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-59689 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Sep. 30, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:libraesva:email_security_gateway:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 5.0.31 *cpe:2.3:a:libraesva:email_security_gateway:*:*:*:*:*:*:*:* versions from (including) 5.1.0 up to (excluding) 5.1.20 *cpe:2.3:a:libraesva:email_security_gateway:*:*:*:*:*:*:*:* versions from (including) 5.2.0 up to (excluding) 5.2.31 *cpe:2.3:a:libraesva:email_security_gateway:*:*:*:*:*:*:*:* versions from (including) 5.3.0 up to (excluding) 5.3.16 *cpe:2.3:a:libraesva:email_security_gateway:*:*:*:*:*:*:*:* versions from (including) 5.4.0 up to (excluding) 5.4.8 *cpe:2.3:a:libraesva:email_security_gateway:*:*:*:*:*:*:*:* versions from (including) 5.5.0 up to (excluding) 5.5.7
    Added Reference Type MITRE: https://docs.libraesva.com/knowledgebase/security-advisory-command-injection-vulnerability-cve-2025-59689/ Types: Vendor Advisory
    Added Reference Type MITRE: https://www.libraesva.com/security-blog/ Types: Vendor Advisory
  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Sep. 30, 2025

    Action Type Old Value New Value
    Added Date Added 2025-09-29
    Added Due Date 2025-10-20
    Added 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.
    Added Vulnerability Name Libraesva Email Security Gateway Command Injection Vulnerability
  • New CVE Received by [email protected]

    Sep. 19, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    Added CWE CWE-77
    Added Reference https://docs.libraesva.com/knowledgebase/security-advisory-command-injection-vulnerability-cve-2025-59689/
    Added Reference https://www.libraesva.com/security-blog/
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 6.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact