{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-16277", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-07-20T10:05:24.721Z", "datePublished": "2026-07-20T14:09:38.333Z", "dateUpdated": "2026-07-20T14:09:38.333Z"}, "containers": {"cna": {"title": "Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrlist()", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "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": [{"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rpcbind", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:10"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rpcbind", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:8"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rpcbind", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:9"]}, {"vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rpcbind", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:openshift:4"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-16277", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2462085", "name": "RHBZ#2462085", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://git.linux-nfs.org/?p=steved/rpcbind.git;a=commitdiff;h=bb9bb7286a4c345442946dc2ce3c9e7f67e96d4d"}, {"url": "https://www.linuxfromscratch.org/blfs/advisories/consolidated.html"}], "datePublic": "2026-07-20T13:47:34.090Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-121", "description": "Stack-based Buffer Overflow", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-121: Stack-based Buffer Overflow", "workarounds": [{"lang": "en", "value": "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."}], "timeline": [{"lang": "en", "time": "2026-04-26T18:12:27.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-07-20T13:47:34.090Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Red Hat would like to thank Aisle Research and Michalis Vasileiadis (GitHub: vmihalis) for reporting this issue."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-07-20T14:09:38.333Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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{"acknowledgement": "Red Hat would like to thank Aisle Research and Michalis Vasileiadis (GitHub: vmihalis) for reporting this issue.", "bugzilla": {"description": "rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrlist()", "id": "2462085", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2462085"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-121", "details": ["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."], "mitigation": {"lang": "en:us", "value": "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."}, "name": "CVE-2026-16277", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "impact": "moderate", "package_name": "rpcbind", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "impact": "moderate", "package_name": "rpcbind", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "impact": "moderate", "package_name": "rpcbind", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "impact": "moderate", "package_name": "rpcbind", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-07-20T13:47:34Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-16277\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-16277\nhttps://git.linux-nfs.org/?p=steved/rpcbind.git;a=commitdiff;h=bb9bb7286a4c345442946dc2ce3c9e7f67e96d4d\nhttps://www.linuxfromscratch.org/blfs/advisories/consolidated.html"], "statement": "We rate the flaw as Moderate because exploitation requires a user or administrator to actively run `rpcinfo -l` against a malicious or compromised rpcbind endpoint (UI:R) \u2014 it cannot be triggered without that action. The demonstrated impact is limited to a crash of the `rpcinfo` client process; confidentiality and integrity are not affected, and no reliable code execution has been established.", "threat_severity": "Moderate"}

{}