Cyber Resilience

CVE-2025-14847

Mongodb 3.6.0 – 4.4.30

CISA KEVActive ExploitationEUVD ExploitedPublic PoC
Published
19 December 2025
Modified
13 January 2026
KEV Added
29 December 2025
Patch / advisory
View advisory
CVSS Score v4 8.7
Click a component to see what it means
Raw vectorCVSS: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
EPSS Score 0.83 99.6th percentile
Risk Priority 75 floored blend · peak EPSS

Summary

CVE-2025-14847 is a high-severity Improper Handling of Length Parameter Inconsistency (CWE-130) vulnerability in Mongodb Mongodb. Its CVSS base score is 8.7 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 0.4% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2025-14847 involves mismatched length fields in Zlib compressed protocol headers within MongoDB Server, potentially allowing an unauthenticated client to read uninitialized heap memory. This vulnerability affects multiple versions across several MongoDB Server branches: all v7.0 prior to 7.0.28, v8.0 prior to 8.0.17, v8.2 prior to 8.2.3, v6.0 prior to 6.0.27, v5.0 prior to 5.0.32, v4.4 prior to 4.4.30, v4.2 versions greater than or equal to 4.2.0, v4.0 versions greater than or equal to 4.0.0, and v3.6 versions greater than or equal to 3.6.0. It is associated with CWE-130 (Improper Handling of Length Parameter Inconsistency) and carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

An unauthenticated remote attacker can exploit this issue over the network with low attack complexity and no user interaction required. Successful exploitation enables disclosure of uninitialized heap memory contents, providing high-impact confidentiality without affecting integrity or availability.

Advisories indicate mitigation through upgrading to patched releases where available, such as MongoDB Server v7.0.28, v8.0.17, v8.2.3, v6.0.27, v5.0.32, and v4.4.30. References include MongoDB's JIRA ticket SERVER-115508, an OSS-Security mailing list announcement, and third-party resources offering detection and mitigation scripts for heap memory exposure in this context.

EU & UK References

Vulnerability Data

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…

more

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.

CWE(s)
CWE-130
KEV Date Added
29 December 2025

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-10060Same product: Mongodb Mongodb
CVE-2026-13063Same product: Mongodb Mongodb
CVE-2026-13066Same product: Mongodb Mongodb
CVE-2026-6914Same product: Mongodb Mongodb
CVE-2026-13057Same product: Mongodb Mongodb
CVE-2024-3372Same product: Mongodb Mongodb
CVE-2026-8201Same product: Mongodb Mongodb
CVE-2025-11979Same product: Mongodb Mongodb
CVE-2025-6709Same product: Mongodb Mongodb
CVE-2025-10061Same product: Mongodb Mongodb

Affected Assets

mongodb
mongodb
3.6.0 — 4.4.30 · 5.0.0 — 5.0.32 · 6.0.0 — 6.0.27

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V3.5.5
  • V4.2.1
  • V4.2.2

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and evaluation can discover length-parameter inconsistencies through targeted parsing tests.

SI-10 Information Input Validation good match

Input validation enforces correct length-to-data consistency checks on parsed messages before processing.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly enforce length validation and input sanitization during coding and review.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect length-inconsistency vulnerabilities before deployment.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle mandates input validation and length checks that directly address inconsistent length fields.

A.8.26 Application security requirements partial match
prevents

Application security requirements include explicit rules for handling message lengths and data structures.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles require robust parsing and bounds checking to prevent length-related flaws.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly prohibit improper length handling and enforce defensive parsing practices.

References