CVE-2025-59689
MediumActively exploited (CISA 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.
SeverityMedium
CVSS6.1
Exploit probability—
ProductLibraesva Email Security Gateway
PublishedSep 19, 2025
First seenSep 19, 2025
Added to KEVSep 29, 2025
Weakness typeCWE-77Command injection
How to fix
CISA 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.
CISA due date: Oct 20, 2025Update
- libraesva email_security_gateway5.0.31, 5.1.20, 5.2.31, 5.3.16, 5.4.8, 5.5.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| libraesva email_security_gateway | 4.5 ≤ v < 5.0.31, 5.1.0 ≤ v < 5.1.20, 5.2.0 ≤ v < 5.2.31, 5.3.0 ≤ v < 5.3.16, 5.4.0 ≤ v < 5.4.8, 5.5.0 ≤ v < 5.5.7 | 5.0.31, 5.1.20, 5.2.31, 5.3.16, 5.4.8, 5.5.7 |
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