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Fencer Intel
high 7.5

CVE-2026-94640 json

Rpcbind: unbounded memory allocation in rpcbind statistics tracking allows unauthenticated remote denial of service

published last mo. modified 7d ago also EUVD-2026-84534

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

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 Procedure Call) statistics in unbounded in-memory lists, leading to persistent memory growth and increased CPU usage. This can degrade or exhaust service availability.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:1.2.7-3.el10_2.1
  • Red Hat Red Hat Enterprise Linux 8 0:1.2.5-11.el8_10
  • Red Hat Red Hat Enterprise Linux 9 0:1.2.6-7.el9_8.1
  • Red Hat Red Hat OpenShift Container Platform 4.22 4.22.9.8.202610241758-0
  • rpcbind RHEL 9 1.2.6-7.el9_8.1
  • rpcbind RHEL 8 1.2.5-11.el8_10
  • rpcbind RHEL 10.2 1.2.7-3.el10_2.1

red hat advisories RHSA-2026:83562RHSA-2026:83563RHSA-2026:83561

  • rpcbind Linux Micro 6.1 1.2.9-slfo.1.1_3.1
  • rpcbind Linux Micro 6.0 1.2.9-159998.1.1
  • rpcbind SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +11 more 0.2.3-150000.5.17.1
  • rpcbind SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 1.2.9-160000.3.1
  • rpcbind SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 0.2.3-24.18.1

suse advisories SUSE-SU-2026:24275-1SUSE-SU-2026:24320-1SUSE-SU-2026:4568-1SUSE-SU-2026:4446-1SUSE-SU-2026:23946-1SUSE-SU-2026:23959-1

  • rpcbind openSUSE Leap 16.0 1.2.9-160000.3.1
  • rpcbind openSUSE Tumbleweed 1.2.9-3.1

opensuse advisories openSUSE-SU-2026:21975-1openSUSE-SU-2026:11929-1

  • rpcbind AlmaLinux 10 1.2.7-3.el10_2.1
  • rpcbind AlmaLinux 9 1.2.6-7.el9_8.1
  • rpcbind AlmaLinux 8 1.2.5-11.el8_10

almalinux advisories ALSA-2026:83561ALSA-2026:83562ALSA-2026:83563

  • rpcbind Rocky Linux 10 1.2.7-3.el10_2.1
  • rpcbind Rocky Linux 9 1.2.6-7.el9_8.1
  • rpcbind Rocky Linux 8 1.2.5-11.el8_10

rocky linux advisories RLSA-2026:83561RLSA-2026:83562RLSA-2026:83563

Is CVE-2026-94640 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-94640 updated cvss 7.5

rpcbind: Unbounded memory allocation in rpcbind statistics tracking allows unauthenticated remote denial of service

  • Red Hat Enterprise Linux 6 rpcbind Red Hat Enterprise Linux 7 rpcbind Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8 Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9
    affected: workaround, no fix available
  • Red Hat Enterprise Linux BaseOS (v. 8) rpcbind 1.2.5-11.el8_10
    fixed: vendor fix RHSA-2026:83563
  • Red Hat Enterprise Linux BaseOS (v. 9) rpcbind 1.2.6-7.el9_8.1
    fixed: vendor fix RHSA-2026:83562
  • Red Hat Enterprise Linux BaseOS (v. 10) rpcbind 1.2.7-3.el10_2.1
    fixed: vendor fix RHSA-2026:83561
  • Red Hat OpenShift Container Platform 4.22 rhcos 4.22.9.8.202610241758
    fixed: vendor fix RHSA-2026:89197

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
last mo.

Exploit prediction

0.64% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat OpenShift Container Platform 4.22
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat OpenShift Container Platform 4
  • Red Hat Red Hat OpenShift Container Platform 5

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.