A flaw was found in the PCP (Performance Co-Pilot) `pmproxy` service. A remote attacker can exploit a vulnerability in the `pmLogLoadInDom()` function by sending a specially crafted request. This bypasses a critical bounds check, which can lead to the `pmproxy` service crashing, causing a Denial of Service (DoS). Additionally, this flaw may enable the leakage of sensitive information from the system's memory.

The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:97556 advisory.

    * PCP: PCP: Remote denial of service and information leakage (CVE-2026-16530)

    Bug Fix(es) and Enhancement(s):

    * [pcp pmda ds389] some metrics display error of compatibility  (JIRA:Rocky Linux-159914)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:97299 advisory.

    * PCP: PCP: Remote denial of service and information leakage (CVE-2026-16530)

    * PCP: PCP: Arbitrary file creation via path traversal in pmproxy logger servlet (CVE-2026-16531)

    Bug Fix(es) and Enhancement(s):

    * [Downstream] Rebase to the v7.1.3 or newer in 10.3 (JIRA:Rocky Linux-173456)

    * Cockpit reports Metrics history could not be loaded when some older pmlogger metrics are corrupted     (JIRA:Rocky Linux-139714)

    * pcp-pmda-hdb and pcp-pmda-postgresql ship active default credentials in configuration files (JIRA:Rocky     Linux-152221)

    * [Rocky Linux 10.2] PCP (pcp-zeroconf) now pulls a new set of additional packages that are not really     required by default (JIRA:Rocky Linux-180384)

    * Remove legacy pcp-pmda-bcc package from Rocky Linux 10 and in favor of pcp-pmda-bpf (JIRA:Rocky     Linux-188397)

    * Update of MSSQL PMDA to work with msodbcsql v18 (JIRA:Rocky Linux-177599)

    * Migrate to libvalkey from hiredis/hiredis-cluster (JIRA:Rocky Linux-108916)

    * pcp2openmetrics reports only the first metric when uses pmlogger archives (JIRA:Rocky Linux-114006)

    * pcp2opentelemetry generates output that is incompatible with OTLP/protobuf (JIRA:Rocky Linux-130463)

    * opentelemetry.control.status_code metric does not report failing scripts (JIRA:Rocky Linux-130499)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:97556 advisory.

    Performance Co-Pilot (PCP) is a suite of tools, services, and libraries for acquisition, archiving, and     analysis of system-level performance measurements. Its light-weight distributed architecture makes it     particularly well-suited to centralized analysis of complex systems.

    Security Fix(es):

    * PCP: PCP: Remote denial of service and information leakage (CVE-2026-16530)

    Bug Fix(es) and Enhancement(s):

    * [pcp pmda ds389] some metrics display error of compatibility  (JIRA:RHEL-159914)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:97299 advisory.

    Performance Co-Pilot (PCP) is a suite of tools, services, and libraries for acquisition, archiving, and     analysis of system-level performance measurements. Its light-weight distributed architecture makes it     particularly well-suited to centralized analysis of complex systems.

    Security Fix(es):

    * PCP: PCP: Remote denial of service and information leakage (CVE-2026-16530)

    * PCP: PCP: Arbitrary file creation via path traversal in pmproxy logger servlet (CVE-2026-16531)

    Bug Fix(es) and Enhancement(s):

    * [Downstream] Rebase to the v7.1.3 or newer in 10.3 (JIRA:RHEL-173456)

    * Cockpit reports Metrics history could not be loaded when some older pmlogger metrics are corrupted     (JIRA:RHEL-139714)

    * pcp-pmda-hdb and pcp-pmda-postgresql ship active default credentials in configuration files     (JIRA:RHEL-152221)

    * [RHEL 10.2] PCP (pcp-zeroconf) now pulls a new set of additional packages that are not really required     by default (JIRA:RHEL-180384)

    * Remove legacy pcp-pmda-bcc package from RHEL 10 and in favor of pcp-pmda-bpf (JIRA:RHEL-188397)

    * Update of MSSQL PMDA to work with msodbcsql v18 (JIRA:RHEL-177599)

    * Migrate to libvalkey from hiredis/hiredis-cluster (JIRA:RHEL-108916)

    * pcp2openmetrics reports only the first metric when uses pmlogger archives (JIRA:RHEL-114006)

    * pcp2opentelemetry generates output that is incompatible with OTLP/protobuf (JIRA:RHEL-130463)

    * opentelemetry.control.status_code metric does not report failing scripts (JIRA:RHEL-130499)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 10 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21636-1 advisory.

    - CVE-2026-16524: command injection in `linux_sockets` PMDA via `network.persocket.filter` (bsc#1272922).
    - CVE-2026-16526: pmdaroot privilege escalation via `FD_CLOEXEC` fd inheritance and missing peer     credentials       (bsc#1272923).
    - CVE-2026-16527: missing authentication flags in pmproxy REST API (bsc#1272924).
    - CVE-2026-16529: integer overflow in `__pmGetPDU` leads to permanent DoS (bsc#1272925).
    - CVE-2026-16530: multiple OOB reads in libpcp record and PDU decoders (bsc#1272926).
    - CVE-2026-16531: path traversal via hostname in pmproxy logger servlet (bsc#1272927).
    - command injection in `pmieconf` `write_pmiefile` via `$HOME` and `-f` (bsc#1272928).
    - command injection in `pmlogcp/pmlogmv` `do_link` via unsanitised filenames (bsc#1272930).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3505-1 advisory.

    - CVE-2026-16524: command injection in `linux_sockets` PMDA via `network.persocket.filter` (bsc#1272922).
    - CVE-2026-16526: pmdaroot privilege escalation via `FD_CLOEXEC` fd inheritance and missing peer     credentials       (bsc#1272923).
    - CVE-2026-16527: missing authentication flags in pmproxy REST API (bsc#1272924).
    - CVE-2026-16529: integer overflow in `__pmGetPDU` leads to permanent DoS (bsc#1272925).
    - CVE-2026-16530: multiple OOB reads in libpcp record and PDU decoders (bsc#1272926).
    - CVE-2026-16531: path traversal via hostname in pmproxy logger servlet (bsc#1272927).
    - Command injection in `pmieconf` `write_pmiefile` via `$HOME` and `-f` (bsc#1272928).
    - Command injection in `pmlogcp/pmlogmv` `do_link` via unsanitised filenames (bsc#1272930).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3508-1 advisory.

    - CVE-2026-16524: command injection in `linux_sockets` PMDA via `network.persocket.filter` (bsc#1272922).
    - CVE-2026-16526: pmdaroot privilege escalation via `FD_CLOEXEC` fd inheritance and missing peer     credentials       (bsc#1272923).
    - CVE-2026-16527: missing authentication flags in pmproxy REST API (bsc#1272924).
    - CVE-2026-16529: integer overflow in `__pmGetPDU` leads to permanent DoS (bsc#1272925).
    - CVE-2026-16530: multiple OOB reads in libpcp record and PDU decoders (bsc#1272926).
    - CVE-2026-16531: path traversal via hostname in pmproxy logger servlet (bsc#1272927).
    - command injection in `pmieconf` `write_pmiefile` via `$HOME` and `-f` (bsc#1272928).
    - command injection in `pmlogcp/pmlogmv` `do_link` via unsanitised filenames (bsc#1272930).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3507-1 advisory.

    - CVE-2026-16524: command injection in `linux_sockets` PMDA via `network.persocket.filter` (bsc#1272922).
    - CVE-2026-16526: pmdaroot privilege escalation via `FD_CLOEXEC` fd inheritance and missing peer     credentials       (bsc#1272923).
    - CVE-2026-16527: missing authentication flags in pmproxy REST API (bsc#1272924).
    - CVE-2026-16529: integer overflow in `__pmGetPDU` leads to permanent DoS (bsc#1272925).
    - CVE-2026-16530: multiple OOB reads in libpcp record and PDU decoders (bsc#1272926).
    - CVE-2026-16531: path traversal via hostname in pmproxy logger servlet (bsc#1272927).
    - command injection in `pmieconf` `write_pmiefile` via `$HOME` and `-f` (bsc#1272928).
    - command injection in `pmlogcp/pmlogmv` `do_link` via unsanitised filenames (bsc#1272930).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3506-1 advisory.

    - CVE-2026-16524: command injection in `linux_sockets` PMDA via `network.persocket.filter` (bsc#1272922).
    - CVE-2026-16526: pmdaroot privilege escalation via `FD_CLOEXEC` fd inheritance and missing peer     credentials       (bsc#1272923).
    - CVE-2026-16527: missing authentication flags in pmproxy REST API (bsc#1272924).
    - CVE-2026-16529: integer overflow in `__pmGetPDU` leads to permanent DoS (bsc#1272925).
    - CVE-2026-16530: multiple OOB reads in libpcp record and PDU decoders (bsc#1272926).
    - CVE-2026-16531: path traversal via hostname in pmproxy logger servlet (bsc#1272927).
    - command injection in `pmieconf` `write_pmiefile` via `$HOME` and `-f` (bsc#1272928).
    - command injection in `pmlogcp/pmlogmv` `do_link` via unsanitised filenames (bsc#1272930).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in the PCP (Performance Co-Pilot) `pmproxy` service. A remote attacker can exploit a     vulnerability in the `pmLogLoadInDom()` function by sending a specially crafted request. This bypasses a     critical bounds check, which can lead to the `pmproxy` service crashing, causing a Denial of Service     (DoS). Additionally, this flaw may enable the leakage of sensitive information from the system's memory.
    (CVE-2026-16530)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
380091	RockyLinux 9 : pcp (RLSA-2026:97556)	Nessus	Rocky Linux Local Security Checks	Local	medium
380062	RockyLinux 10 : pcp (RLSA-2026:97299)	Nessus	Rocky Linux Local Security Checks	Local	medium
378513	RHEL 9 : pcp (RHSA-2026:97556)	Nessus	Red Hat Local Security Checks	Local	medium
378203	RHEL 10 : pcp (RHSA-2026:97299)	Nessus	Red Hat Local Security Checks	Local	medium
341181	openSUSE 16: libpcp-devel / libpcp3 / libpcp_gui2 / libpcp_import1 / libpcp_mmv1 / etc (openSUSE-SU-2026:21636-1)	Nessus	SuSE Local Security Checks	Local	high
333027	SUSE SLES15: libpcp-devel / libpcp3 / libpcp_gui2 / libpcp_import1 / libpcp_mmv1 / etc (SUSE-SU-2026:3505-1)	Nessus	SuSE Local Security Checks	Local	high
333021	SUSE SLES12 Security Update : pcp (SUSE-SU-2026:3508-1)	Nessus	SuSE Local Security Checks	Local	high
333020	SUSE SLED15: libpcp-devel / libpcp3 / libpcp_gui2 / libpcp_import1 / libpcp_mmv1 / etc (SUSE-SU-2026:3507-1)	Nessus	SuSE Local Security Checks	Local	high
333016	SUSE SLES15: libpcp-devel / libpcp3 / libpcp_gui2 / libpcp_import1 / libpcp_mmv1 / etc (SUSE-SU-2026:3506-1)	Nessus	SuSE Local Security Checks	Local	high
330816	Linux Distros Unpatched Vulnerability : CVE-2026-16530	Nessus	Misc.	Local	medium

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