Medium severity · published Sep 19, 2025
CVE-2025-59689
Libraesva Email Security Gateway Command Injection Vulnerability
In wildKEV
6.1
CVSS
1.9%
EPSS
Yes
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 79% of CVEs
Exploited in the wildYes
CISA KEVListed Sep 29, 2025
Federal remediation dueOct 20, 2025
Ransomware campaign useNot known
Affected products
Which versions
ES
Email Security Gateway · Libraesva
4.5 before 5.0.31; 5.1 before 5.1.20; 5.2 before 5.2.31; 5.3 before 5.4.8; 5.5 before 5.5.7 · source: vendor, NVD, KEV
In the news
VulnerabilityHigh
[CISA KEV] CVE-2025-59689: Libraesva Email Security Gateway - Libraesva Email Security Gateway Command Injection Vulnerability
Libraesva Email Security Gateway (ESG) contains a command injection vulnerability which allows command injection via a compressed e-mail attachment.
ESEmail Security GatewayCVE-2025-59689
Sep 29, 2025·CISA KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-59689
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-59689
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
www.libraesva.com
https://www.libraesva.com/security-blog/
docs.libraesva.com
https://docs.libraesva.com/knowledgebase/security-advisory-command-injection-vulnerability-cve-2025-59689/