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CVE-2026-16530— Pcp: pcp: remote denial of service and information leakage

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

pcp是pcp组织开源的一个系统性能分析工具包。 pcp存在缓冲区错误漏洞，该漏洞源于pmLogLoadInDom函数边界检查被绕过，远程攻击者可发送特制请求导致pmproxy服务崩溃，造成拒绝服务，并可能泄露系统内存中的敏感信息。

CVSS 6.5 · Medium EPSS 0.30% · P20

Affected Version Matrix 6

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any unknown
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
Red Hat Red Hat OpenShift Container Platform 4 any affected
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I. Basic Information for CVE-2026-16530

Vulnerability Information
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Vulnerability Title
Pcp: pcp: remote denial of service and information leakage
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
pcp 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pcp是pcp组织开源的一个系统性能分析工具包。 pcp存在缓冲区错误漏洞，该漏洞源于pmLogLoadInDom函数边界检查被绕过，远程攻击者可发送特制请求导致pmproxy服务崩溃，造成拒绝服务，并可能泄露系统内存中的敏感信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-16530

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III. Intelligence Information for CVE-2026-16530

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Vendor Advisories for CVE-2026-16530 (2)

Same Patch Batch · Red Hat · 2026-07-30 · 15 CVEs total

CVE-2026-16526 8.8 HIGH Pcp: pcp: privilege escalation to root via linux_sockets pmda vulnerability
CVE-2026-58222 8.8 HIGH Samba: samba ad ldap compare filter injection and trusted-request confusion disclose prote
CVE-2026-16524 7.8 HIGH Pcp: pcp linux_sockets pmda: arbitrary command execution via command injection
CVE-2026-18381 7.6 HIGH Project-koku/koku-metrics-operator: koku-metrics-operator: operator service-account token
CVE-2026-18378 7.6 HIGH Project-koku/koku-metrics-operator: koku-metrics-operator: cluster pull-secret token exfil
CVE-2026-16529 7.5 HIGH Pcp: pcp: denial of service due to signed integer overflow
CVE-2026-16527 7.3 HIGH Pcp: pcp pmproxy: unauthenticated access to /store endpoint allows bypassing pmcd access r
CVE-2026-18382 6.8 MEDIUM Project-koku/koku-metrics-operator: koku-metrics-operator: service-account client credenti
CVE-2026-68562 6.2 MEDIUM Ansible-collection-redhat-leapp: ansible-collection-redhat-leapp: information disclosure v
CVE-2026-18369 5.8 MEDIUM Dogtag-pki: pki-core: redhat-pki: pki: acme http-01 validation ssrf via ip literal identif
CVE-2026-68563 5.5 MEDIUM Ansible-collection-redhat-leapp: ansible-collection-redhat-leapp: information disclosure o
CVE-2026-16531 5.3 MEDIUM Pcp: pcp: arbitrary file creation via path traversal in pmproxy logger servlet
CVE-2026-58218 5.3 MEDIUM Samba: dns signing dos via tkey name cache exhaustion
CVE-2026-58216 5.3 MEDIUM Samba: kpasswd service: kpasswd packet that contains malformed asn.1 might cause the serve

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-125

V. Comments for CVE-2026-16530

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