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Vulnerability · Published Jul 21, 2026 · Assigned by redhat

CVE-2026-16461Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting

Medium 6.5

In plain English

A medium-severity stack buffer overflow in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 82.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by `rpcinfo -s`), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs `rpcinfo -s` against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12rpcbindno fix listedDEBIAN-CVE-2026-16461
Debian:13rpcbindno fix listedDEBIAN-CVE-2026-16461
Debian:14rpcbindno fix listedDEBIAN-CVE-2026-16461
Ubuntu:22.04:LTSrpcbindno fix listedUBUNTU-CVE-2026-16461
Ubuntu:24.04:LTSrpcbindno fix listedUBUNTU-CVE-2026-16461
Ubuntu:26.04:LTSrpcbindno fix listedUBUNTU-CVE-2026-16461
Ubuntu:26.10rpcbindno fix listedUBUNTU-CVE-2026-16461

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 5 see references

Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References