CVE-2026-16277

Summary

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with rpcinfo -l, address information returned by the server is copied into a fixed-size buffer without sufficient bounds checking. A malicious or compromised rpcbind server could use this flaw to crash the rpcinfo client, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Affected Software

VendorProductVersion RangeStatus

Weaknesses

  • CWE-121: Stack-based Buffer Overflow

Workarounds

To mitigate this issue, avoid using the rpcinfo -l command against untrusted, attacker-controlled, or compromised rpcbind hosts. Restrict the use of the rpcinfo utility to trusted internal endpoints or secure test environments only.

References