MongoDB: MongoDB warns admins to patch severe vulnerability immediately

**MongoDB Urges Immediate Patching for High-Severity Memory-Read Vulnerability (CVE-2025-14847)**

MongoDB has issued an urgent warning to administrators to patch a high-severity memory-read vulnerability (CVE-2025-14847) that could allow unauthenticated attackers to remotely exploit affected systems. The flaw, present in multiple MongoDB Server versions, enables low-complexity attacks without requiring user interaction.

The vulnerability stems from improper handling of length parameter inconsistencies in the server’s zlib implementation, potentially exposing uninitialized heap memory. While initially suspected of enabling remote code execution (RCE), MongoDB has clarified that the flaw has not been officially classified as such. However, under certain conditions, it could still pose a risk of arbitrary code execution or device compromise.

MongoDB recommends immediate upgrades to fixed versions—8.2.3, 8.0.17, 7.0.28, 6.0.27, 5.0.32, or 4.4.30—to mitigate the threat. For those unable to patch immediately, disabling zlib compression via server configuration is advised.

Affected Versions:

• MongoDB 8.2.0–8.2.3, 8.0.0–8.0.16, 7.0.0–7.0.26, 6.0.0–6.0.26, 5.0.0–5.0.31, 4.4.0–4.4.29
• All versions of MongoDB Server 4.2, 4.0, and 3.6

MongoDB, a widely used non-relational database management system, serves over 62,500 customers globally, including numerous Fortune 500 companies. The advisory follows a 2021 CISA directive that flagged a separate MongoDB-related RCE flaw (CVE-2019-10758) as actively exploited, underscoring the platform’s ongoing security challenges.

Source: https://www.bleepingcomputer.com/news/security/mongodb-warns-admins-to-patch-severe-vulnerability-immediately/

MongoDB cybersecurity rating report: https://www.rankiteo.com/company/mongodbinc

"id": "MON1766765150",
"linkid": "mongodbinc",
"type": "Vulnerability",
"date": "12/2025",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"

{'affected_entities': [{'customers_affected': '62,500+ customers',
                        'industry': 'Technology',
                        'location': 'Global',
                        'name': 'MongoDB',
                        'size': '62,500+ customers worldwide, including dozens '
                                'of Fortune 500 companies',
                        'type': 'Database Management System Provider'}],
 'attack_vector': 'Remote',
 'customer_advisories': 'MongoDB customers urged to upgrade or disable zlib '
                        'compression to mitigate risk.',
 'data_breach': {'type_of_data_compromised': 'Uninitialized heap memory'},
 'date_publicly_disclosed': '2025-12-26',
 'description': 'MongoDB has warned IT admins to immediately patch a '
                'high-severity memory-read vulnerability (CVE-2025-14847) that '
                'may be exploited by unauthenticated attackers remotely. The '
                'flaw affects multiple MongoDB and MongoDB Server versions and '
                'can be abused in low-complexity attacks without user '
                "interaction. An exploit of the Server's zlib implementation "
                'can return uninitialized heap memory without authentication. '
                'MongoDB strongly recommends upgrading to a fixed version or '
                'disabling zlib compression if immediate upgrade is not '
                'possible.',
 'impact': {'data_compromised': 'Uninitialized heap memory',
            'operational_impact': 'Potential arbitrary code execution and '
                                  'control of targeted devices',
            'systems_affected': 'MongoDB Server versions 8.2.0-8.2.3, '
                                '8.0.0-8.0.16, 7.0.0-7.0.26, 6.0.0-6.0.26, '
                                '5.0.0-5.0.31, 4.4.0-4.4.29, and all v4.2, '
                                'v4.0, v3.6 versions'},
 'investigation_status': 'Ongoing',
 'post_incident_analysis': {'corrective_actions': 'Patching vulnerable '
                                                  'versions, disabling zlib '
                                                  'compression, and improving '
                                                  'input validation in future '
                                                  'releases.',
                            'root_causes': 'Improper handling of length '
                                           'parameter inconsistency in zlib '
                                           'implementation (CWE-130)'},
 'recommendations': 'Immediately upgrade to patched versions or disable zlib '
                    'compression. Monitor for unauthorized access or '
                    'exploitation attempts.',
 'references': [{'date_accessed': '2025-12-26',
                 'source': 'MongoDB Security Advisory'},
                {'source': 'CISA Known Exploited Vulnerabilities Catalog '
                           '(CVE-2019-10758)'}],
 'response': {'communication_strategy': "Public advisory issued on MongoDB's "
                                        'security page',
              'containment_measures': 'Upgrade to MongoDB 8.2.3, 8.0.17, '
                                      '7.0.28, 6.0.27, 5.0.32, or 4.4.30; '
                                      'alternatively, disable zlib compression',
              'remediation_measures': 'Patching vulnerable versions, disabling '
                                      'zlib compression'},
 'stakeholder_advisories': 'IT admins and MongoDB users advised to patch '
                           'immediately.',
 'title': 'MongoDB High-Severity Memory-Read Vulnerability (CVE-2025-14847)',
 'type': 'Memory-Read Vulnerability',
 'vulnerability_exploited': 'CVE-2025-14847 (Improper handling of length '
                            'parameter inconsistency, CWE-130)'}