CVE-2026-94640: Red Hat Enterprise Linux 10 · Uncontrolled Resource Consumption
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 6 Nov 2026, 11:41 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 7.5 |
|---|
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 22 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10rpcbind | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8rpcbind | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9rpcbind | Affected– | Fixed in– |
| Red Hat OpenShift Container Platform 4.22openshift/ose-rhel-coreos-9 | Affected– | Fixed in– |
| Red Hat Enterprise Linux 6rpcbind | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7rpcbind | Affected– | Fixed in– |
AI-suggested
Red Hat advises restricting network access to the rpcbind service on port 111 to trusted systems using firewall rules, such as with firewalld commands to allow only specific trusted networks. Alternatively, if rpcbind is only needed locally, configure it to listen only on the loopback interface to prevent external exposure. These mitigations reduce the attack surface and prevent remote unauthenticated attackers from exploiting the vulnerability.
Description
CVE-2026-94640 is a vulnerability in the rpcbind service of Red Hat Enterprise Linux 10 that allows a remote unauthenticated attacker to cause a denial of service (DoS) by sending many unique requests. The service tracks RPC statistics in unbounded in-memory lists, causing persistent memory growth and increased CPU usage, which can degrade or exhaust service availability. No patch version is explicitly stated. Mitigation involves restricting network access to rpcbind on port 111 to trusted systems via firewall rules or configuring rpcbind to listen only on the loopback interface.
References
- access.redhat.com/security/cve/CVE-2026-94640 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2462960 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:83562 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:83561 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:83563 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:89197 (opens in a new tab)