---
id: CVE-2026-94640
title: A flaw was found in rpcbind
summary: >-
  A flaw was found in rpcbind. This vulnerability allows a remote,
  unauthenticated attacker to cause a Denial of Service (DoS) by sending a large
  number of unique requests. The rpcbind service records previously unseen RPC
  (Remote Procedur…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
vendor: Red Hat
product: rpcbind
affected:
  - rpcbind (all versions)
  - rpcbind (all versions)
  - rpcbind (all versions)
  - rpcbind (all versions)
  - rpcbind (all versions)
  - openshift/ose-rhel-coreos-8 (all versions)
  - openshift/ose-rhel-coreos-9 (all versions)
published: '2026-09-22'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T00:16:38.213'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-94640'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-94640'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2462960'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-94640.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-94640'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-94640'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-25T23:39:21.046890Z'
epss: 0.00608
epssPercentile: 0.46833
ingestedAt: '2026-09-22T16:06:00.485Z'
---

## Overview

A flaw was found in rpcbind. This vulnerability allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by sending a large number of unique requests. The rpcbind service records previously unseen RPC (Remote Procedure Call) statistics in unbounded in-memory lists, leading to persistent memory growth and increased CPU usage. This can degrade or exhaust service availability.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-22 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-94640.json)