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How CVE-2026-73570 turns a Zimbra log file into remote code execution

Elasticsearch Security Labs
Elasticsearch Security Labs
Published October 23, 2026Original Report

Excerpt

When we are building detections for various threats, we regularly run the exploits on representative systems to help us build high-quality rules. The Common Vulnerabilities and Exposures (CVE) entry CVE-2026-73570 for Zimbra is no exception. Zimbra is a widely used enterprise email and collaboration software platform, known for its SMTP platform, among other services. SMTP plays a critical role in the infrastructure of many organizations by providing email services that often…

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Indicators of Compromise

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1 indicators

TypeIndicatorConfidenceScoreFirst Seen
CVECVE-2026-73570HighScore 74/100First seen

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