CVE-2025-14180

Published Dec 27, 2025

Last updated 6 months ago

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-14180 is a null pointer dereference vulnerability found in the PHP PDO PostgreSQL driver. This flaw occurs when the `PDO::ATTR_EMULATE_PREPARES` option is enabled. An attacker can trigger the vulnerability by providing an invalid character sequence, such as `\x99`, within a prepared statement parameter. This invalid character sequence causes the `PQescapeStringConn` function to return a `NULL` value. Subsequently, the `pdo_parse_params()` function attempts to dereference this `NULL` pointer, leading to a crash (segmentation fault) of the PHP process and impacting the availability of the target server. The vulnerability affects PHP versions 8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, and 8.5.* before 8.5.1.

Description: In PHP versions 8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1 when using the PDO PostgreSQL driver with PDO::ATTR_EMULATE_PREPARES enabled, an invalid character sequence (such as \x99) in a prepared statement parameter may cause the quoting function PQescapeStringConn to return NULL, leading to a null pointer dereference in pdo_parse_params() function. This may lead to crashes (segmentation fault) and affect the availability of the target server.
Source: security@php.net
NVD status: Analyzed
Products: php

Risk scores

CVSS 4.0

Type: Secondary
Base score: 8.2
Impact score: -
Exploitability score: -
Vector string: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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
Severity: HIGH

CVSS 3.1

Type: Primary
Base score: 7.5
Impact score: 3.6
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: HIGH

Weaknesses

security@php.net: CWE-476

Hype score: Not currently trending

Configurations

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            "matchCriteriaId": "E56CD990-B79E-4253-B810-13787B23B028",
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References

Sources include official advisories and independent security research.