Vulnerability Intelligence Report
Libraesva Email Security Gateway Command Injection Vulnerability
CVE-2025-59689
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.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
6.1
MEDIUM
Exploitability:2.9
Impact Score:2.8
EPSS Probability:1.93%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-77 ↗CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Libraesva | Email Security Gateway | 4.5 < 5.0.31 (affected), 5.1 < 5.1.20 (affected), 5.2 < 5.2.31 (affected), 5.3 < 5.4.8 (affected), 5.5 < 5.5.7 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | MITRE Corporation · N/A · USA |
| Reserved | 2025-09-18T00:00:00 |
| Published | 2025-09-19T00:00:00 |
| Last Updated | 2026-02-26T17:48:25 |
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