CVE-2026-16527

An unauthenticated remote attacker can bypass access controls by sending crafted requests to the PCP pmproxy /store endpoint. This allows the attacker to overwrite any PMDA metric, leading to arbitrary code execution and system takeover.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:55560
https://access.redhat.com/errata/RHSA-2026:55617
https://access.redhat.com/errata/RHSA-2026:55740
https://access.redhat.com/errata/RHSA-2026:72272
https://access.redhat.com/errata/RHSA-2026:72273
https://access.redhat.com/errata/RHSA-2026:72593
https://access.redhat.com/errata/RHSA-2026:72594
https://access.redhat.com/errata/RHSA-2026:73767
https://access.redhat.com/errata/RHSA-2026:74612
https://access.redhat.com/errata/RHSA-2026:74613
https://access.redhat.com/security/cve/CVE-2026-16527
https://bugzilla.redhat.com/show_bug.cgi?id=2506031

Configurations

No configuration.

History

02 Oct 2026, 00:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:74612 - () https://access.redhat.com/errata/RHSA-2026:74613 -

30 Sep 2026, 23:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:73767 -

28 Sep 2026, 22:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:72593 - () https://access.redhat.com/errata/RHSA-2026:72594 -

28 Sep 2026, 10:16

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:72272 - () https://access.redhat.com/errata/RHSA-2026:72273 -

Information

Published : 2026-07-30 06:25

Updated : 2026-10-02 00:17

NVD link : CVE-2026-16527

Mitre link : CVE-2026-16527

CVE.ORG link : CVE-2026-16527

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

CWE-284

Improper Access Control

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10", "versions": [{"status": "unaffected", "version": "0:7.0.3-5.el10_2", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux_eus:10.0"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10.0 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:6.3.7-1.el10_0.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "versions": [{"status": "unaffected", "version": "0:5.3.7-22.el8_10.5", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:5.2.5-8.el8_4.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:5.2.5-8.el8_4.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:5.3.5-10.el8_6.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:5.3.5-10.el8_6.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "versions": [{"status": "unaffected", "version": "0:5.3.7-19.el8_8.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:5.3.7-19.el8_8.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "versions": [{"status": "unaffected", "version": "0:6.3.7-8.el9_8.4", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:6.0.1-8.el9_2.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.4::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:6.2.0-5.el9_4.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:6.3.7-1.el9_6.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:7"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "packageName": "pcp", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift:4"], "vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4", "packageName": "openshift/ose-rhel-coreos-9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}]}], "published": "2026-07-30T06:25:02.813", "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:55560", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:55617", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:55740", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:72272", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:72273", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:72593", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:72594", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:73767", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:74612", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:74613", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-16527", "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506031", "source": "secalert@redhat.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-306"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-284"}]}], "descriptions": [{"lang": "en", "value": "An unauthenticated remote attacker can bypass access controls by sending crafted requests to the PCP pmproxy /store endpoint. This allows the attacker to overwrite any PMDA metric, leading to arbitrary code execution and system takeover."}], "lastModified": "2026-10-02T00:17:02.073", "sourceIdentifier": "secalert@redhat.com"}