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Libraesva security patch release for CVE-2025-59689

Security Patch Release
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Last updated
Happening score
H score 51
1 unique sources, 1 articles

Summary

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Libraesva released an emergency update for Email Security Gateway (ESG) to fix CVE-2025-59689, a flaw already exploited in attacks. The patch affects ESG 4.5 and later and is available across fixed releases for supported branches. The vendor also pushed the fix to cloud and on-premise deployments, while older unsupported versions require a manual upgrade to a supported release.

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Timeline

  1. 23.09.2025 20:51 2 articles · 8mo ago

    Libraesva releases emergency ESG fix for CVE-2025-59689

    Mitigation Patch Update

    Libraesva released an emergency update for Email Security Gateway (ESG) to address CVE-2025-59689, a command injection flaw triggered by a malicious e-mail containing a specially crafted compressed attachment that could allow arbitrary shell commands as a non-privileged user. The vendor said at least one confirmed incident involved an attacker believed to be a foreign hostile state entity, and customers running versions below 5.0 must manually upgrade to a supported release because those builds are end-of-life.

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