{"id":"CVE-2026-16277","title":"Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrlist()","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 check…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-121"],"vendor":"Red Hat","product":"rpcbind","affected":["rpcbind (all versions)","rpcbind (all versions)","rpcbind (all versions)","rpcbind (all versions)","rpcbind (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-07-21T15:28:58.541669Z"},"published":"2026-07-20","updated":"2026-11-05","sourceUpdated":"2026-11-05T16:43:12.829Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-16277","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-16277"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462085","label":"RHBZ#2462085"},{"url":"https://git.linux-nfs.org/?p=steved/rpcbind.git;a=commitdiff;h=bb9bb7286a4c345442946dc2ce3c9e7f67e96d4d"},{"url":"https://www.linuxfromscratch.org/blfs/advisories/consolidated.html"}],"tags":["cve.org"],"epss":0.00505,"epssPercentile":0.43358,"ingestedAt":"2026-11-05T22:38:31.396Z","slug":"CVE-2026-16277","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `rpcbind (all versions)`\n- `rpcbind (all versions)`\n- `rpcbind (all versions)`\n- `rpcbind (all versions)`\n- `rpcbind (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nTo 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.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}