CVE-2026-92870Network attack vectorHinoki check available

Process crash via watchdog failover stack overflow

Published Sep 30, 2026 · Updated Sep 30, 2026

Stack-based buffer overflow in Pgpool-II allows remote attackers to crash the main process via malformed watchdog failover messages. The watchdog failover-message handler writes attacker-controlled, arbitrary-length data onto the main-process stack without enforcing its buffer boundary. Exploitation requires watchdog to be enabled, its network port to be reachable, and wd_authkey to be unset; the reported effect is process termination, not code execution.

CVSS severity8.7
High
EPSS probability0.32%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Stack-based buffer overflow in Pgpool-II allows remote attackers to crash the main process via malformed watchdog failover messages. The watchdog failover-message handler writes attacker-controlled, arbitrary-length data onto the main-process stack without enforcing its buffer boundary. Exploitation requires watchdog to be enabled, its network port to be reachable, and wd_authkey to be unset; the reported effect is process termination, not code execution.

The record

CVE
CVE-2026-92870
Published
Sep 30, 2026
Updated
Sep 30, 2026
Vendor
Pgpool Global Development Group
Product
Pgpool-II
Classifications
CWE-121, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.5.x <=4.2.x
  2. Affected versionversion=4.3.0 <=4.3.20
  3. Affected versionversion=4.4.0 <=4.4.17
  4. Affected versionversion=4.5.0 <=4.5.12
  5. Affected versionversion=4.6.0 <=4.6.7
  6. Affected versionversion=4.7.0 <=4.7.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pgpool Global Development Group · Pgpool-IIversion=3.5.x <=4.2.x; version=4.3.0 <=4.3.20; version=4.4.0 <=4.4.17; version=4.5.0 <=4.5.12; version=4.6.0 <=4.6.7; version=4.7.0 <=4.7.2

Published CVSS scores

8.7JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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