CVE-2026-92871

Unauthenticated NULL Pointer Dereference in Pgpool-II Watchdog Process Causes Denial of Service

Published Sep 30, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Description

A NULL pointer dereference vulnerability exists in Pgpool-II, which may allow an unauthenticated attacker to cause abnormal termination of the watchdog process.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Pgpool Global Development Group

Pgpool-II

unaffected

Version	Status	Constraints
`4.7.0`	affected	≤ 4.7.2
`4.6.0`	affected	≤ 4.6.7
`4.5.0`	affected	≤ 4.5.12
`4.4.0`	affected	≤ 4.4.17
`4.3.0`	affected	≤ 4.3.20
`3.5.x`	affected	≤ 4.2.x

No data.

Vendor Product Versions

Pgpool Global Development Group

Pgpool-ii

Version	Status	Scheme	Platform
`[4.7.0,4.7.2]`	affected	semver	—
`[4.6.0,4.6.7]`	affected	semver	—
`[4.5.0,4.5.12]`	affected	semver	—
`[4.4.0,4.4.17]`	affected	semver	—
`[4.3.0,4.3.20]`	affected	semver	—
`[3.5.x,4.2.x]`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.290% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://jvn.jp/en/jp/JVN22475874/
https://pgpool.net/news/2026-09-29/

History

Sep 30, 2026 9:00 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Pgpool Global Development Group Pgpool Global Development Group pgpool-ii
Vendors & Products		Pgpool Global Development Group Pgpool Global Development Group pgpool-ii

Sep 30, 2026 5:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Sep 30, 2026 12:30 PM Title updated View changes

Type	Values Removed	Values Added
Title		Unauthenticated NULL Pointer Dereference in Pgpool-II Watchdog Process Causes Denial of Service

Sep 30, 2026 8:00 AM Description updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		A NULL pointer dereference vulnerability exists in Pgpool-II, which may allow an unauthenticated attacker to cause abnormal termination of the watchdog process.
Weaknesses		CWE-476
References		https://jvn.jp/en/jp/JVN22475874/ https://pgpool.net/news/2026-09-29/
Metrics		cvssV3_0 `{'score': 7.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}` cvssV4_0 `{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}`