Summary: CISA has added “MongoBleed” (CVE-2025-14847) to its Known Exploited Vulnerabilities (KEV) catalog. This flaw in MongoDB Server allows unauthenticated, remote attackers to leak uninitialized heap memory, potentially exposing database credentials, API keys, and sensitive user data. Over 87,000 instances are currently vulnerable worldwide.
Business Impact: A single unpatched MongoDB instance can lead to a catastrophic data breach. In the financial sector, this allows attackers to gradually “bleed” server memory until they reconstruct administrative passwords or customer session tokens.
Why It Happened: The issue stems from improper handling of length parameter inconsistencies during Zlib message decompression, which is often enabled by default.
Recommended Executive Action: Federal agencies must patch by Jan 19, 2026. Private firms should treat this as a P1 emergency. Audit all MongoDB instances (v5.0 to v8.2) and upgrade immediately. Disable Zlib decompression if an immediate upgrade is not feasible.
Hashtags: #MongoBleed #MongoDB #CISA #KEV #DataBreach #DatabaseSecurity #PatchNow