CVE-2026-85231Medium· 6.5▾ SunlitA flaw was found in libtirpc. An authenticated remote attacker could exploit this vulnerability by sending oversized wrapped data requests to an RPC (Remote Procedure Call) service configured with RPCSEC_GSS (Remote Procedure Call Securi…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
A flaw was found in libtirpc. An authenticated remote attacker could exploit this vulnerability by sending oversized wrapped data requests to an RPC (Remote Procedure Call) service configured with RPCSEC_GSS (Remote Procedure Call Security-Generic Security Service) integrity or privacy. This can lead to unbounded memory allocation, resulting in a Denial of Service (DoS) by exhausting system resources and causing the service to become unstable or terminate.
libtirpc (all versions)libtirpc (all versions)libtirpc (all versions)libtirpc (all versions)libtirpc (all versions)libtirpc (all versions)openshift/ose-rhel-coreos-8 (all versions)openshift/ose-rhel-coreos-9 (all versions)Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
To reduce exposure, disable RPCSEC_GSS integrity or privacy modes on externally reachable RPC services where feasible. Implement strict request or transport record size limits in the embedding RPC service before wrapped blob decoding. Additionally, consider using process memory limits or supervision to contain single-process memory exhaustion.
Connected by shared product, vendor, weakness, or advisory.
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