CVEvulnerability

CVE-2025-14847

8.7 HIGH Known exploited Published 2025-12-19 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability — MongoDB MongoDB and MongoDB Server

MongoDB Server contains an improper handling of length parameter inconsistency vulnerability in Zlib compressed protocol headers. This vulnerability may allow a read of uninitialized heap memory by an unauthenticated client.

Added to KEV: 2025-12-29
Remediation due: 2026-01-19
Ransomware use: Unknown
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes: This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://jira.mongodb.org/browse/SERVER-115508 ; https://nvd.nist.gov/vuln/detail/CVE-2025-14847

Status: Analyzed
Published: 2025-12-19
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 4.0 ([email protected]): 8.7 HIGH — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected]): 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses: CWE-130

Description

Mismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0.

Affected configurations

• mongodb mongodb (>= 3.6.0 < 4.4.30) • mongodb mongodb (>= 5.0.0 < 5.0.32) • mongodb mongodb (>= 6.0.0 < 6.0.27) • mongodb mongodb (>= 7.0.0 < 7.0.28) • mongodb mongodb (>= 8.0.0 < 8.0.17) • mongodb mongodb (>= 8.2.0 < 8.2.3)

Weakness · CWE (1)

CWE-130 Improper Handling of Length Parameter Inconsistency weakness

References