CVE-2025-6709Network attack vector

Server crash via malformed OIDC date value

Published Jun 26, 2025 · Updated Jun 26, 2025

Improper input validation in MongoDB Server 6.0, 7.0, and 8.0 branches allows remote attackers to crash the server through OIDC. The OIDC JSON date-value parser accepts a crafted date value that reaches an invariant check, whose failure terminates the mongod process. The attack is unauthenticated in 7.0 before 7.0.17 and 8.0 before 8.0.5; 6.0 before 6.0.21 is affected only after authentication, and the bounded impact is a server crash.

CVSS severity7.5
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in MongoDB Server 6.0, 7.0, and 8.0 branches allows remote attackers to crash the server through OIDC. The OIDC JSON date-value parser accepts a crafted date value that reaches an invariant check, whose failure terminates the mongod process. The attack is unauthenticated in 7.0 before 7.0.17 and 8.0 before 8.0.5; 6.0 before 6.0.21 is affected only after authentication, and the bounded impact is a server crash.

The record

CVE
CVE-2025-6709
Published
Jun 26, 2025
Updated
Jun 26, 2025
Vendor
MongoDB
Product
MongoDB Server
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.0 <6.0.21
  2. Affected versionversion=7.0 <7.0.17
  3. Affected versionversion=8.0 <8.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MongoDB · MongoDB Serverversion=6.0 <6.0.21; version=7.0 <7.0.17; version=8.0 <8.0.5

Published CVSS scores

7.5MongoDB, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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