How severe is CVE-2025-6709?

CVE-2025-6709 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-6709 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-6709?

CVE-2025-6709 affects Mongodb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-6709?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-6709 have an EU (EUVD) identifier?

Yes. CVE-2025-6709 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19228.

When was CVE-2025-6709 published?

CVE-2025-6709 was published on 2025-06-26 and last updated on 2026-06-17.

CVE-2025-6709

CVE-2025-6709 is a high-severity vulnerability in Mongodb with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-19228
Weakness: CWE-20
Affected product: Mongodb
Published: 2025-06-26
Last modified: 2026-06-17

Description

The MongoDB Server is susceptible to a denial of service vulnerability due to improper handling of specific date values in JSON input when using OIDC authentication. This can be reproduced using the mongo shell to send a malicious JSON payload leading to an invariant failure and server crash. This issue affects MongoDB Server v7.0 versions prior to 7.0.17 and MongoDB Server v8.0 versions prior to 8.0.5. The same issue affects MongoDB Server v6.0 versions prior to 6.0.21, but an attacker can only induce denial of service after authenticating.

Frequently asked questions

What is CVE-2025-6709?: The MongoDB Server is susceptible to a denial of service vulnerability due to improper handling of specific date values in JSON input when using OIDC authentication. This can be reproduced using the mongo shell to send a malicious JSON payload leading to an invariant failure and server crash. This issue affects MongoDB Server v7.0 versions prior to 7.0.17 and MongoDB Server v8.0 versions prior to 8.0.5. The same issue affects MongoDB Server v6.0 versions prior to 6.0.21, but an attacker can only induce denial of service after authenticating.
How severe is CVE-2025-6709?: CVE-2025-6709 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-6709 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-6709?: CVE-2025-6709 affects Mongodb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-6709?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-6709 have an EU (EUVD) identifier?: Yes. CVE-2025-6709 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19228.
When was CVE-2025-6709 published?: CVE-2025-6709 was published on 2025-06-26 and last updated on 2026-06-17.

References

https://jira.mongodb.org/browse/SERVER-106748

Affected products (1)

cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

54.37.10.124 (ipv4-addr)
152.32.175.45 (ipv4-addr)
98.70.52.248 (ipv4-addr)
103.74.121.154 (ipv4-addr)
174.138.26.106 (ipv4-addr)
20.255.185.89 (ipv4-addr)
149.102.144.215 (ipv4-addr)
34.124.225.147 (ipv4-addr)