CVE-2025-12818 - Vulnerability Details - OpenCVE

Integer wraparound in multiple PostgreSQL libpq client library functions allows an application input provider or network peer to cause libpq to undersize an allocation and write out-of-bounds by hundreds of megabytes. This results in a segmentation fault for the application using libpq. Versions before PostgreSQL 18.1, 17.7, 16.11, 15.15, 14.20, and 13.23 are affected.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://www.postgresql.org/support/security/CVE-2025-12818/

History

Thu, 13 Nov 2025 14:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 13 Nov 2025 13:15:00 +0000

Type	Values Removed	Values Added
Description		Integer wraparound in multiple PostgreSQL libpq client library functions allows an application input provider or network peer to cause libpq to undersize an allocation and write out-of-bounds by hundreds of megabytes. This results in a segmentation fault for the application using libpq. Versions before PostgreSQL 18.1, 17.7, 16.11, 15.15, 14.20, and 13.23 are affected.
Title		PostgreSQL libpq undersizes allocations, via integer wraparound
Weaknesses		CWE-190
References		https://www.postgresql.org/support/security/CVE-2025-12818/
Metrics		cvssV3_1 `{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}`

MITRE

Status: PUBLISHED

Assigner: PostgreSQL

Published: 2025-11-13T13:00:12.911Z

Updated: 2025-11-13T13:59:33.436Z

Reserved: 2025-11-06T17:22:32.130Z

Link: CVE-2025-12818

Vulnrichment

Updated: 2025-11-13T13:59:31.006Z

NVD

Status : Received

Published: 2025-11-13T13:15:45.313

Modified: 2025-11-13T13:15:45.313

Link: CVE-2025-12818

Redhat

No data.

OpenCVE Enrichment

No data.

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