High severity · published Sep 22, 2026
CVE-2026-94640
Rpcbind: unbounded memory allocation in rpcbind statistics tracking allows unauthenticated remote denial of service
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 6 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 7 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat OpenShift Container Platform 4 · Red Hat
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-94640
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-94640
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:83561
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:83562
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:83563
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-94640
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2462960
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