CVE-2026-89096Network attack vector

Service crash via unreleased callback memory

Published Oct 16, 2026 · Updated Oct 16, 2026

Memory leakage in nfs-utils rpc.statd allows remote attackers to crash the service through repeated state notification requests. Callback processing fails to release allocated memory, allowing sustained requests to exhaust system resources. Exploitation requires a network-exposed rpc.statd service but no authentication; the documented consequence is service degradation or a crash.

CVSS severity5.9
Medium
EPSS probability0.31%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leakage in nfs-utils rpc.statd allows remote attackers to crash the service through repeated state notification requests. Callback processing fails to release allocated memory, allowing sustained requests to exhaust system resources. Exploitation requires a network-exposed rpc.statd service but no authentication; the documented consequence is service degradation or a crash.

The record

CVE
CVE-2026-89096
Published
Oct 16, 2026
Updated
Oct 16, 2026
Vendor
libuser Project
Product
Red Hat OpenShift Container Platform 4
Classifications
CWE-772, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

libuser Project · Red Hat OpenShift Container Platform 4Affected versions are unavailable in this record.
libuser Project · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
libuser Project · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.
libuser Project · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
libuser Project · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.

Published CVSS scores

5.9Red HatCVSS:3.1/AV:N/AC:H/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-772Missing Release of Resource after Effective Lifetime
T1499Endpoint Denial of Service

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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