CVE-2025-59689 (GCVE-0-2025-59689)

Vulnerability from cvelistv5 – Published: 2025-09-19 00:00 – Updated: 2026-02-26 17:48
VLAI CISA Previdian
Summary
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.
Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-27 03:55 UTC
CWE
  • CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
Assigner
References
Impacted products
Vendor Product Version
Libraesva Email Security Gateway Affected: 4.5 , < 5.0.31 (custom)
Affected: 5.1 , < 5.1.20 (custom)
Affected: 5.2 , < 5.2.31 (custom)
Affected: 5.3 , < 5.4.8 (custom)
Affected: 5.5 , < 5.5.7 (custom)
Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 90f4ec7d-111a-45db-b2aa-d244a7d01414

Vulnerability ID: CVE-2025-59689

Status: Confirmed

Status Updated: 2025-09-29 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2025-09-29
Asserted: 2025-09-29
Scope
Notes: Libraesva Email Security Gateway Command Injection Vulnerability | Affected: Libraesva / Email Security Gateway | 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. | Due date: 2025-10-20 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://docs.libraesva.com/knowledgebase/security-advisory-command-injection-vulnerability-cve-2025-59689/ ; https://nvd.nist.gov/vuln/detail/CVE-2025-59689
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-77
Feed CISA Known Exploited Vulnerabilities Catalog
Product Email Security Gateway
Due Date 2025-10-20
Date Added 2025-09-29
Vendorproject Libraesva
Vulnerabilityname Libraesva Email Security Gateway Command Injection Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-10-02 08:09 CEST | Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: c659c5d8-4daf-4c64-ba38-d1940a50a3aa

Vulnerability ID: CVE-2025-59689

Status: Confirmed

Status Updated: 2026-06-01 12:41 CEST

Exploited: Yes

Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: 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... | Affected: Libraesva / Email Security Gateway | CVSS: 6.1 (MEDIUM) | EPSS: 0.01864 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title 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...
Cve Id CVE-2025-59689
Vendor Libraesva
Ghsa Id None
Product Email Security Gateway
Added Date 2026-06-01T10:41:17.159Z
Cvss Score 6.1
Epss Score 0.01864
Previous Ids
Cvss Severity MEDIUM
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.78514
Used In Malware unknown
Vulnerability Id CVE-2025-59689
Ahead Of Cisa Kev 
{
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  "unit": "day"
}
Not Yet In Cisa Kev False
References
Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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