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Performance Co-Pilot CVE-2026-16524

| EUVDEUVD-2026-50969 HIGH
OS Command Injection (CWE-78)
2026-07-30 redhat GHSA-f5qw-jg2q-vf56
7.8
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
7.8 HIGH

Local metric-write access needed (AV:L, PR:L) with no user interaction; injected command runs as the PMDA user granting full C/I/A within that context, no scope change.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat
7.8 HIGH
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jul 30, 2026 - 05:50 vuln.today
CVE Published
Jul 30, 2026 - 05:15 cve.org
HIGH 7.8

DescriptionCVE.org

A command injection flaw in PCP's linux_sockets PMDA allows malicious shell metacharacters via the network.persocket.filter metric. This failed validation lets attackers execute arbitrary commands as the PMDA user when metrics refresh.

AnalysisAI

Local privilege-relevant command injection in Performance Co-Pilot's (PCP) linux_sockets PMDA lets an authenticated user inject shell metacharacters through the network.persocket.filter metric, causing arbitrary commands to run as the PMDA user each time metrics refresh. Reported by Red Hat, it affects the pcp packages shipped across Red Hat Enterprise Linux 6 through 10 and OpenShift Container Platform 4. There is no public exploit identified at time of analysis, and the flaw is not listed in CISA KEV.

Technical ContextAI

PCP (Performance Co-Pilot) is a distributed metrics collection framework used for system and application performance monitoring on Linux. Metrics are gathered by Performance Metric Domain Agents (PMDAs); the linux_sockets PMDA exposes per-socket network statistics, including a configurable filter exposed through the network.persocket.filter metric. The root cause is CWE-78 (OS Command Injection): the value supplied for this filter metric is passed into a shell context without validation or sanitization, so shell metacharacters embedded in the metric value are interpreted rather than treated as literal data when the PMDA refreshes its metric values. The affected CPEs enumerate the pcp component as delivered in red_hat_enterprise_linux_6 through red_hat_enterprise_linux_10 and red_hat_openshift_container_platform_4.

RemediationAI

Apply the updated pcp packages from Red Hat once released for your RHEL major version (6 through 10) or OpenShift Container Platform 4 - no vendor-released fixed version is stated in the available data, so consult https://access.redhat.com/security/cve/CVE-2026-16524 and the Bugzilla tracker at https://bugzilla.redhat.com/show_bug.cgi?id=2506023 for the exact patched build and errata. As a compensating control until patched, disable or unload the linux_sockets PMDA (remove it from the active PMDA configuration / stop it via the PCP PMDA management so the network.persocket.* metrics are not collected), accepting the trade-off of losing per-socket network metrics; alternatively restrict which local users can write metric values and tightly limit local access to the PCP collector (pmcd) socket, since the flaw requires the ability to set the offending metric. Avoid running the affected PMDA in shared or multi-tenant hosts where untrusted local users are present.

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Vendor StatusVendor

SUSE

Severity: Critical
Product Status
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS Affected
SUSE Linux Enterprise Module for Development Tools 15 SP7 Affected

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CVE-2026-16524 vulnerability details – vuln.today

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