[NEW] [high] Red Hat Enterprise Linux (pcp): Multiple vulnerabilities
An attacker can exploit multiple vulnerabilities in Red Hat Enterprise Linux (pcp) to execute arbitrary code, elevate privileges, bypass security measures, and conduct a denial of service attack.
CSIRTS triage
- What
- Multiple vulnerabilities in Performance Co-Pilot enable arbitrary code execution, privilege escalation, authentication bypass, and denial of service.
- Who is affected
- Red Hat Enterprise Linux systems running vulnerable versions of pcp.
- Urgency
- High; multiple attack vectors including remote code execution warrant timely patching.
- Action
- Apply Red Hat security updates for pcp to address CVE-2026-16524, CVE-2026-16526, CVE-2026-16527, and CVE-2026-16529.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2868
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Moderate exploitation riskCVE-2026-165241.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 62% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-165260.76% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-165270.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-165290.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-16524 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-16526 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-16527 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-16529 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- highCVE-2026-16529: A signed integer overflow in the PCP __pmGetPDU() function can be exploited via crafted networ…nvd
- highCVE-2026-16527: An unauthenticated remote attacker can bypass access controls by sending crafted requests to t…nvd
- highCVE-2026-16526: A flaw in the PCP linux_sockets module exposes an unsecured internal connection. An attacker w…nvd
- highCVE-2026-16524: A command injection flaw in PCP's linux_sockets PMDA allows malicious shell metacharacters via…nvd
Recent advisories for Red Hat Enterprise
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[NEW] [high] Red Hat Enterprise Linux (nodejs:24): Multiple vulnerabilitiescert-bund · 2026-08-17
- medium[NEW] [medium] Red Hat Enterprise Linux (glib2): Multiple vulnerabilitiescert-bund · 2026-08-17
- medium[NEW] [medium] Red Hat Enterprise Linux (389-ds-base): Multiple vulnerabilitiescert-bund · 2026-08-17
- medium[NEW] [medium] Red Hat Enterprise Linux (yelp, dracut): Multiple vulnerabilitiescert-bund · 2026-08-17
- medium[NEW] [medium] Red Hat Enterprise Linux (gnome-remote-desktop): Vulnerability enables Denial of Servicecert-bund · 2026-08-17
- medium[NEW] [medium] Red Hat Enterprise Linux (python-idna): Vulnerability Enables Denial of Servicecert-bund · 2026-08-17
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