CVE-2025-59689: Technical Deep-Dive (Auto Refreshed)

Generated on 2026-03-23T21:39:44.141Z. This file is automatically regenerated every 30 minutes by the CVE AI enrichment job using web sources (NVD, MITRE, CISA KEV, GitHub).

Executive Technical 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.

• Context preserved from previous revision: 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. 1. Use only isolated environments and systems you own or are explicitly authorized to test.

Technical Details

• CVE: CVE-2025-59689
• KEV date added: 2025-09-29
• KEV due date: 2025-10-20
• NVD published: 2025-09-19
• NVD modified: 2025-11-05
• MITRE modified: 2026-02-26
• CVSS base score: 6.1
• CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
• CVSS exploitability score: 2.8
• CVSS impact score: 2.7
• Attack vector: Network
• Attack complexity: Low
• Privileges required: None
• User interaction: Required
• Scope: Changed
• Confidentiality impact: Low
• Integrity impact: Low
• Availability impact: None

Versions and Products Impacted

• libraesva / email security gateway (versions: >= 4.5, < 5.0.31)
• libraesva / email security gateway (versions: >= 5.1.0, < 5.1.20)
• libraesva / email security gateway (versions: >= 5.2.0, < 5.2.31)
• libraesva / email security gateway (versions: >= 5.3.0, < 5.3.16)
• libraesva / email security gateway (versions: >= 5.4.0, < 5.4.8)
• libraesva / email security gateway (versions: >= 5.5.0, < 5.5.7)
• Libraesva / Email Security Gateway (versions: 4.5, 5.1, 5.2, 5.3, 5.5)

Weakness Classification

• CWE-77

Repositories for Lab Validation (Public Examples)

• No public repository matched this CVE query in the current run.

People and Organizations Mentioned

• mitre
• Libraesva
• Email Security Gateway

Practical Defensive Validation (Authorized Only)

1. Use only isolated environments and systems you own or are explicitly authorized to test.
2. Snapshot infrastructure before validation and preserve baseline logs (EDR, SIEM, OS, app).
3. Deploy libraesva / email security gateway (versions: >= 4.5, < 5.0.31) with synthetic data and validate strict server-side input validation and parameterization.
4. Replay safe payload patterns through WAF/IDS tuning pipelines to reduce false negatives.
5. Correlate request IDs with app/database logs to improve root-cause analysis speed.

References

• NVD record: https://nvd.nist.gov/vuln/detail/CVE-2025-59689
• MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2025-59689
• CISA KEV Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• CISA KEV JSON feed: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
• KEV notes: https://docs.libraesva.com/knowledgebase/security-advisory-command-injection-vulnerability-cve-2025-59689/ ; https://nvd.nist.gov/vuln/detail/CVE-2025-59689
• https://docs.libraesva.com/knowledgebase/security-advisory-command-injection-vulnerability-cve-2025-59689/
• https://www.libraesva.com/security-blog/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59689

This content is for defensive security training and authorized validation only.