Trending
CVE-2025-14847

CVE detail

CVE-2025-14847

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.

CVSS 8.7 · HighBuzz score 80.5KEV listed1 public exploit repository references

Buzz score

Why this CVE is surfacing

Buzz score total 80.5

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 30.0 · diversity 20.0 · KEV 25.0 · OTX 0.0 · PoC 5.5

Mention score

30.0

19 evidence mentions in the snapshot

Diversity score

20.0

12 sources across 6 categories

KEV score

25.0

Known exploited vulnerability present

OTX score

0.0

0 OTX pulses

PoC score

5.5

1 repos · best confidence 0.99

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 2; within the 30d window
Peak daily: 1; highest bucket

Evidence

Source links by recency

Newest mentions first

19 source links · newest first

ABB Ability ZenonCISA Alerts
Wastewater Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2025-14847 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 Serve
governmentwww.cisa.govAug 6, 2026, 12:00 PM
Chinese-Speaking Threat Actor Harnesses AI Models for Autonomous CyberattacksUnit42
task. Figure 1. Autonomous attack flow observed in Hermes Agent session (May 7, 2026). Phase 1: Langflow Exploitation (CVE-2026-33017) DeepSeek identified a Langflow vulnerability ( CVE-2026-33017 , CVSS 9.8) and autonomously attempted exploitation through the following steps: Downloading the public PoC exploit from GitHub Enumerating 84 Langflow inst
vendorunit42.paloaltonetworks.comJul 30, 2026, 10:00 AM
Threat Brief: MongoDB Vulnerability (CVE-2025-14847)Unit42
Database platform MongoDB disclosed CVE-2025-14847, called MongoBleed. This is an unauthenticated memory disclosure vulnerability with a CVSS score of 8.7.
vendorunit42.paloaltonetworks.comJan 13, 2026, 8:30 PM
CVE-2025-14847Horizon3.ai
MongoDB Server Uninitialized Heap Memory Disclosure (MongoBleed) | Active Exploitation
exploithorizon3.aiJan 6, 2026, 5:31 PM
Security Affairs newsletter Round 557 by Pierluigi Paganini – INTERNATIONAL EDITIONSecurity Affairs
A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. French authorities investigate AI ‘undressing’ deepfakes on X Thousands of ColdFusion exploit attempts spotted during Christmas […]
newssecurityaffairs.comJan 4, 2026, 1:06 PM
MongoBleed (CVE-2025-14847): the US, China, and the EU are among the top exploited GEOsSecurity Affairs
MongoBleed (CVE-2025-14847) lets attackers remotely leak memory from unpatched MongoDB servers using zlib compression, without authentication. A critical vulnerability, CVE-2025-14847 (MongoBleed), was disclosed right after Christmas, an unwelcome “gift” for the cybersecurity community, impacting MongoDB Server deployments that use zlib network compression. MongoDB is a popular open-source NoSQL database used to store and manage data […]
newssecurityaffairs.comDec 31, 2025, 8:22 AM
U.S. CISA adds a flaw in MongoDB Server to its Known Exploited Vulnerabilities catalogSecurity Affairs
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a MongoDB Server flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a MongoDB Server vulnerability, tracked as CVE-2025-14847 (CVSS Score of 8.7), to its Known Exploited Vulnerabilities (KEV) catalog. The recently disclosed MongoDB vulnerability CVE-2025-14847 (aka MongoBleed) is being actively exploited, with more […]
newssecurityaffairs.comDec 30, 2025, 8:33 AM
MongoBleed flaw actively exploited in attacks in the wildSecurity Affairs
A recently disclosed MongoDB flaw (MongoBleed) is under active exploitation, with over 87,000 potentially vulnerable instances exposed worldwide. A newly disclosed MongoDB vulnerability, tracked as CVE-2025-14847 (aka MongoBleed, CVSS score of 8.7), is being actively exploited, with more than 87,000 potentially vulnerable instances identified worldwide. Cybersecurity researcher Joe Desimone published a proof-of-concept exploit for this vulnerability […]
newssecurityaffairs.comDec 29, 2025, 12:56 PM
29th December – Threat Intelligence ReportCheck Point Research
For the latest discoveries in cyber research for the week of 29th December, please download our Threat Intelligence Bulletin. TOP ATTACKS AND BREACHES Romanian Waters, the country’s national water management authority, was hit by a ransomware attack that resulted in nearly 1,000 computer systems across national and regional offices being encrypted. The attack affected geographic […]
vendorresearch.checkpoint.comDec 29, 2025, 11:33 AM
Fresh MongoDB Vulnerability Exploited in AttacksSecurityWeek
Dubbed MongoBleed, the high-severity flaw allows unauthenticated, remote attackers to leak sensitive information from MongoDB servers.
newswww.securityweek.comDec 29, 2025, 9:54 AM
Security Affairs newsletter Round 556 by Pierluigi Paganini – INTERNATIONAL EDITIONSecurity Affairs
A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. LangChain core vulnerability allows prompt injection and data exposure NPM package with 56,000 downloads compromises WhatsApp […]
newssecurityaffairs.comDec 28, 2025, 9:20 AM
High severity flaw in MongoDB could allow memory leakageCSO Online
Document database vendor MongoDB has advised customers to update immediately following the discovery of a flaw that could allow unauthenticated users to read uninitialized heap memory. Designated CVE-2025-14847, the bug, mismatched length fields in zlib compressed protocol headers, could allow an attacker to execute arbitrary code and potentially seize control of a device. The flaw […]
newswww.csoonline.comDec 26, 2025, 8:19 PM
High-severity MongoDB flaw CVE-2025-14847 could lead to server takeoverSecurity Affairs
MongoDB addressed a high-severity vulnerability that can be exploited to achieve remote code execution on vulnerable servers. MongoDB addressed a high-severity vulnerability, tracked as CVE-2025-14847 (CVSS score 8.7), an unauthenticated, remote attacker can exploit the issue to execute arbitrary code on vulnerable servers. “An client-side exploit of the Server’s zlib implementation can return uninitialized heap […]
newssecurityaffairs.comDec 25, 2025, 10:12 AM
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14847www.cisa.gov
No excerpt available.
Mitigationwww.cisa.govDec 19, 2025, 11:15 AM
https://www.vicarius.io/vsociety/posts/cve-2025-14847-mitigation-script-heap-memory-exposure-in-mongodb-serverwww.vicarius.io
No excerpt available.
Exploitwww.vicarius.ioDec 19, 2025, 11:15 AM
https://www.vicarius.io/vsociety/posts/cve-2025-14847-detection-script-heap-memory-exposure-in-mongodb-serverwww.vicarius.io
No excerpt available.
Exploitwww.vicarius.ioDec 19, 2025, 11:15 AM
https://www.smartkeyss.com/post/mongobleed-pre-auth-memory-disclosure-via-op_compressed-in-mongodb-cve-2025-14847www.smartkeyss.com
No excerpt available.
Exploitwww.smartkeyss.comDec 19, 2025, 11:15 AM
http://www.openwall.com/lists/oss-security/2025/12/29/21www.openwall.com
No excerpt available.
Exploitwww.openwall.comDec 19, 2025, 11:15 AM
https://jira.mongodb.org/browse/SERVER-115508jira.mongodb.org
No excerpt available.
Exploitjira.mongodb.orgDec 19, 2025, 11:15 AM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

1 repository references · best confidence 0.99 · max 1 stars

sakthivel10q/CVE-2025-14847High confidence
githubDiscovery source unavailable1 starsDiscovered Jul 9, 2026, 1:19 AM

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External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2025-14847.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:mongodb:mongodbSearch this product on Shodan

Exact CVE query

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Metadata

Canonical fields

NVD status

Analyzed

Published

Dec 19, 2025

Modified

Jun 17, 2026

Official record

Authoritative NVD record

CVSS vector

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

CWE IDs

Vendor classifications

How this vector reads

CVSS 4.0 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Attack Requirements (AT): None. No prerequisite deployment or execution condition is required.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): None. Exploitation does not require a targeted user to act.
Vulnerable System Confidentiality (VC): High. There is a total or serious impact to this security property.
Vulnerable System Integrity (VI): None. There is no direct impact to this security property.
Vulnerable System Availability (VA): None. There is no direct impact to this security property.
Subsequent System Confidentiality (SC): None. There is no direct impact to this security property.
Subsequent System Integrity (SI): None. There is no direct impact to this security property.
Subsequent System Availability (SA): None. There is no direct impact to this security property.

Optional CVSS v4 metrics remain in the raw vector; only base metrics are expanded here.

Signals

Exploitation indicators

1 stored signals · KEV present · 0 OTX pulses

KEVKEV
- cwes: CWE-130
- dueDate: 2026-01-19
- knownRansomwareCampaignUse: Unknown
- 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
- product: MongoDB and MongoDB Server
- requiredAction: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- shortDescription: 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.
- vendorProject: MongoDB
- vulnerabilityName: MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability
Observed Dec 29, 2025, 12:00 AM