Risk Letters

Exploited vulnerability

CVE-2025-59689

TLP:CLEAR

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.

Facts

  • Vendor: Libraesva
  • Product: Email Security Gateway
  • CVSS: 6.1
  • EPSS (probability of exploitation within 30 days): 2 %
  • On CISA's Known Exploited Vulnerabilities list since: 29 September 2025
  • First known exploitation: 29 September 2025
  • CISA's deadline for US federal agencies: 20 October 2025
  • Weakness: CWE-77
  • First seen by Risk Letters: 29 September 2025

Members see which Nordic sectors the flaw hits, and what to do about it.

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD