CVE-2026-16527

high

Description

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.

References

Advisories
More

https://access.redhat.com/errata/RHSA-2026:74613

https://access.redhat.com/errata/RHSA-2026:74612

https://access.redhat.com/errata/RHSA-2026:73767

https://access.redhat.com/errata/RHSA-2026:72594

https://access.redhat.com/errata/RHSA-2026:72593

https://access.redhat.com/errata/RHSA-2026:72273

https://access.redhat.com/errata/RHSA-2026:72272

https://access.redhat.com/errata/RHSA-2026:55740

https://access.redhat.com/errata/RHSA-2026:55617

https://access.redhat.com/errata/RHSA-2026:55560

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-50976

https://bugzilla.redhat.com/show_bug.cgi?id=2506031

https://access.redhat.com/security/cve/CVE-2026-16527

Details

Source: Mitre, NVD

Published: 2026-07-30

Updated: 2026-10-02

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N

Severity: High

CVSS v3

Base Score: 7.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L