# CVE-2026-94640: Rpcbind: unbounded memory allocation in rpcbind statistics tracking allows unauthenticated remote denial of service CVE-2026-94640 is fixed in 3 products on 1 platform, first by RHSA-2026:83561, released July 22, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-94640 - Priority: High - CVSS: 7.5 (Important) - EPSS: 0.0064 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jul 22, 2026 - Weakness: Uncontrolled Resource Consumption - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-94640 ## Description The rpcbind utility is a server that converts Remote Procedure Call (RPC) program numbers into universal addresses. It must be running on the host to be able to make RPC calls on a server on that machine. Security Fix(es): * rpcbind: Unbounded memory allocation in rpcbind statistics tracking allows unauthenticated remote denial of service (CVE-2026-94640) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | rpcbind RHEL 10 | 1.2.7-3.el10_2.1 | [RHSA-2026:83561](https://patchblox.com/security/data/fix/linux/rhsa-2026-83561.md) | Jul 22, 2026 | | Linux | rpcbind RHEL 8 | 0:1.2.5-11.el8_10 | [RHSA-2026:83563](https://patchblox.com/security/data/fix/linux/rhsa-2026-83563.md) | Oct 16, 2026 | | Linux | rpcbind RHEL 9 | 0:1.2.6-7.el9_8.1 | [RHSA-2026:83562](https://patchblox.com/security/data/fix/linux/rhsa-2026-83562.md) | Oct 16, 2026 | | Linux | rpcbind almalinux 10 | 1.2.7-3.el10_2.1 | [ALSA-2026:83561](https://patchblox.com/security/data/fix/linux/alsa-2026-83561.md) | Nov 7, 2026 | | Linux | rpcbind almalinux 8 | 1.2.5-11.el8_10 | [ALSA-2026:83563](https://patchblox.com/security/data/fix/linux/alsa-2026-83563.md) | Nov 7, 2026 | | Linux | rpcbind almalinux 9 | 1.2.6-7.el9_8.1 | [ALSA-2026:83562](https://patchblox.com/security/data/fix/linux/alsa-2026-83562.md) | Nov 7, 2026 | | Linux | rpcbind amzn 2023 | 1.2.6-0.amzn2023.0.3 | [ALAS2023-2026-3169](https://patchblox.com/security/data/fix/linux/alas2023-2026-3169.md) | Nov 7, 2026 | | Linux | rpcbind ol 10 | 0:1.2.7-3.el10_2.1 | [ELSA-2026-83561](https://patchblox.com/security/data/fix/linux/elsa-2026-83561.md) | Nov 7, 2026 | | Linux | rpcbind ol 8 | 0:1.2.5-11.el8_10 | [ELSA-2026-83563](https://patchblox.com/security/data/fix/linux/elsa-2026-83563.md) | Nov 7, 2026 | | Linux | rpcbind ol 9 | 0:1.2.6-7.el9_8.1 | [ELSA-2026-83562](https://patchblox.com/security/data/fix/linux/elsa-2026-83562.md) | Nov 7, 2026 | | Linux | rpcbind opensuse-leap 16.0 | 1.2.9-160000.3.1 | [OPENSUSE-SU-2026:21975-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21975-1.md) | Sep 29, 2026 | | Linux | rpcbind rocky 10 | 0:1.2.7-3.el10_2.1 | [RLSA-2026:83561](https://patchblox.com/security/data/fix/linux/rlsa-2026-83561.md) | Nov 7, 2026 | | Linux | rpcbind rocky 8 | 0:1.2.5-11.el8_10 | [RLSA-2026:83563](https://patchblox.com/security/data/fix/linux/rlsa-2026-83563.md) | Nov 7, 2026 | | Linux | rpcbind rocky 9 | 0:1.2.6-7.el9_8.1 | [RLSA-2026:83562](https://patchblox.com/security/data/fix/linux/rlsa-2026-83562.md) | Nov 7, 2026 | | Linux | rpcbind sles 15.6 | 0.2.3-150000.5.17.1 | [SUSE-SU-2026:4568-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4568-1.md) | Oct 7, 2026 | | Linux | rpcbind sles 15.7 | 0.2.3-150000.5.17.1 | [SUSE-SU-2026:4568-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4568-1.md) | Oct 7, 2026 | | Linux | rpcbind sles 16.0 | 1.2.9-160000.3.1 | [SUSE-SU-2026:23946-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23946-1.md) | Sep 29, 2026 | | Linux | rpcbind-debuginfo amzn 2023 | 1.2.6-0.amzn2023.0.3 | [ALAS2023-2026-3169](https://patchblox.com/security/data/fix/linux/alas2023-2026-3169.md) | Nov 7, 2026 | | Linux | rpcbind-debugsource amzn 2023 | 1.2.6-0.amzn2023.0.3 | [ALAS2023-2026-3169](https://patchblox.com/security/data/fix/linux/alas2023-2026-3169.md) | Nov 7, 2026 | --- Data as of 2026-11-09T19:38:12Z UTC. 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