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Cato CTRL™ Threat Research: New MongoDB Vulnerability Allows Instant Remote Server Takedown (CVE-2026-25611)

Cato Networks
Cato Networks
Published March 4, 2026Original Report

Excerpt

Executive Summary Cato CTRL’s Vitaly Simonovich (senior security researcher) has discovered a new vulnerability ( CVE-2026-25611 with a “High” severity rating of 7.5 out of 10) in all MongoDB versions with compression enabled (version 3.4+, enabled by default since version 3.6), including MongoDB Atlas. The vulnerability can enable a threat actor to crash any MongoDB server. MongoDB Atlas clusters are not internet-reachable by default. Clients must be allowed via the…

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1 indicators

TypeIndicatorConfidenceScoreFirst Seen
CVECVE-2026-25611MediumScore 51/100First seen

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