{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-16526", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-07-22T07:26:46.736Z", "datePublished": "2026-07-30T05:20:07.504Z", "dateUpdated": "2026-07-30T05:20:07.504Z"}, "containers": {"cna": {"title": "Pcp: pcp: privilege escalation to root via linux_sockets pmda vulnerability", "metrics": [{"other": {"content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw in the PCP linux_sockets module exposes an unsecured internal connection.\nAn attacker with initial code execution can exploit this to escalate privileges and execute arbitrary commands as root."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "pcp", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:10"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "pcp", "defaultStatus": "unknown", "cpes": ["cpe:/o:redhat:enterprise_linux:6"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "pcp", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:7"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "pcp", "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": "pcp", "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": "rhcos", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:openshift:4"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-16526", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506026", "name": "RHBZ#2506026", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-07-30T00:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-403", "description": "Exposure of File Descriptor to Unintended Control Sphere ('File Descriptor Leak')", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-403: Exposure of File Descriptor to Unintended Control Sphere ('File Descriptor Leak')", "workarounds": [{"lang": "en", "value": "To mitigate this vulnerability, ensure that the `linux_sockets` PMDA is not configured to load as a Dynamic Shared Object (DSO) within PMCD. The default configuration for this PMDA is daemon mode, which is not affected by this flaw. Review your `pmcd.conf` file to confirm the `linux_sockets` PMDA is not loaded as a DSO. If changes are made to `pmcd.conf`, a restart of the `pmcd` service is required for them to take effect."}], "timeline": [{"lang": "en", "time": "2026-07-22T07:11:09.132Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-07-30T00:00:00.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Red Hat would like to thank Francisco Alisson Bezerra (TIM Security Red Team Research, TIM S.p.A), Lucas Gabriel Alves (TIM Security Red Team Research, TIM S.p.A), and Massimiliano Brolli (TIM Security Red Team Research, TIM S.p.A) for reporting this issue."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-07-30T05:20:07.504Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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