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CVE-2025-4207

MEDIUMCVSS 5.9/10EPSS 0.61%

Last modified

CVE-2025-4207 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Buffer over-read in PostgreSQL GB18030 encoding validation allows a database input provider to achieve temporary denial of service on platforms where a 1-byte over-read can elicit process termination. This affects the database server and also libpq. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

Buffer over-read in PostgreSQL GB18030 encoding validation allows a database input provider to achieve temporary denial of service on platforms where a 1-byte over-read can elicit process termination. This affects the database server and also libpq. Versions before PostgreSQL 17.5, 16.9, 15.13, 14.18, and 13.21 are affected.

Metrics

CVSS 3.1
5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
0.61%

44.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-4207?
Buffer over-read in PostgreSQL GB18030 encoding validation allows a database input provider to achieve temporary denial of service on platforms where a 1-byte over-read can elicit process termination. This affects the database server and also libpq. Versions before PostgreSQL 17.5, 16.9, 15.13, 14.18, and 13.21 are affected.
How severe is CVE-2025-4207?
CVE-2025-4207 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.
How do I fix CVE-2025-4207?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-4207?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST