CVE-2026-16527
Pcp: pcp pmproxy: unauthenticated access to /store endpoint allows bypassing pmcd access rules
CVSS Score
7.3
EPSS Score
0.6%
EPSS Percentile
45th
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.
| CWE | CWE-306 |
| Vendor | red hat |
| Product | red hat enterprise linux 10 |
| Published | Jul 30, 2026 |
| Last Updated | Oct 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat OpenShift Container Platform 4
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:55560 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:55617 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:55740 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:72272 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:72273 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:72593 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:72594 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:73767 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:74612 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:74613 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-16527 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2506031