{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-16524", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-07-22T06:52:16.739Z", "datePublished": "2026-07-30T05:15:15.277Z", "dateUpdated": "2026-08-21T12:03:30.827Z" }, "containers": { "cna": { "title": "Pcp: pcp linux_sockets pmda: arbitrary command execution via command injection", "metrics": [ { "other": { "content": { "value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "A command injection flaw in PCP's linux_sockets PMDA allows malicious shell metacharacters via the network.persocket.filter metric.\nThis failed validation lets attackers execute arbitrary commands as the PMDA user when metrics refresh." } ], "affected": [ { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "pcp", "defaultStatus": "affected", "versions": [ { "version": "0:7.0.3-5.el10_2", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/o:redhat:enterprise_linux:10.2" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "pcp", "defaultStatus": "affected", "versions": [ { "version": "0:5.3.7-22.el8_10.5", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:enterprise_linux:8::appstream" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "pcp", "defaultStatus": "affected", "versions": [ { "version": "0:6.3.7-8.el9_8.4", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:enterprise_linux:9::appstream" ] }, { "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 OpenShift Container Platform 4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openshift/ose-rhel-coreos-9", "defaultStatus": "unaffected", "cpes": [ "cpe:/a:redhat:openshift:4" ] } ], "references": [ { "url": "https://access.redhat.com/errata/RHSA-2026:55560", "name": "RHSA-2026:55560", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2026:55617", "name": "RHSA-2026:55617", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2026:55740", "name": "RHSA-2026:55740", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2026-16524", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506023", "name": "RHBZ#2506023", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] } ], "datePublic": "2026-07-30T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-78", "description": "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "workarounds": [ { "lang": "en", "value": "To prevent exploitation, restrict access to the `pmstore` utility by configuring the `[access]` section in `/etc/pcp/pmcd/pmcd.conf`. If the `linux_sockets` PMDA is not essential, it can be unloaded or disabled to remove the attack vector. After modifying `pmcd.conf`, the `pmcd` service must be restarted for changes to take effect." } ], "timeline": [ { "lang": "en", "time": "2026-07-22T04:43:14.479Z", "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": "2026-08-21T12:03:30.827Z" }, "x_generator": { "engine": "cvelib 1.8.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-07-30T14:37:48.088368Z", "id": "CVE-2026-16524", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-30T15:17:34.115Z" } } ] } }