CVE-2026-16526
Pcp: pcp: privilege escalation to root via linux_sockets pmda vulnerability
CVSS Score
8.8
EPSS Score
0.6%
EPSS Percentile
44th
A flaw in the PCP linux_sockets module exposes an unsecured internal connection. An attacker with initial code execution can exploit this to escalate privileges and execute arbitrary commands as root.
| CWE | CWE-403 |
| 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:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
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-2026-16526 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2506026
Credits
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.