CVE-2026-16524
No exploitation reported by the sources we read.
- Published2026-07-30
- WeaknessCWE-78
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
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.
Timeline
dates in UTC- 2026-07-3006:25CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-16524?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-16524?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- pcpAlmaLinux:10all versions · fixed in 7.0.3-5.el10_2and 110 other packages
- pcpAlmaLinux:9all versions · fixed in 6.3.7-8.el9_8.4and 106 other packages
- pcp-docAlmaLinux:8all versions · fixed in 5.3.7-22.el8_10.5and 77 other packages
Vendor advisories
PCP: PCP linux_sockets PMDA: Arbitrary Command Execution via Command Injection
pcp-collector as a component of Red Hat Enterprise Linux 6 · pcp-conf as a component of Red Hat Enterprise Linux 6 · pcp-doc as a component of Red Hat Enterprise Linux 6 · +76 more
Red Hat Security Advisory: pcp security update
Red Hat Security Advisory: pcp security update
Red Hat Security Advisory: pcp security update
Red Hat Security Advisory: pcp security update
Red Hat Security Advisory: pcp security update
5 more advisories
Fix
- Vendor fix Red Hat Product Security RHSA-2026:74613 · 778 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
- Workaround from the vendor Red Hat Product Security RHSA-2026:74613 · 778 productsTo prevent exploitation, restrict access to the `pmstore` utility by configuring the `[access]` section in `/etc/pcp/pmcd/pmcd.conf`. If the `linux_sockets` PMDA is not essential, it can be unloaded or disabled to remove the attack vector. After modifying `pmcd.conf`, the `pmcd` service must be res…
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published
- 2026-07-30
- Last Modified
- 2026-10-12
- NVD status
- Awaiting Analysis
Frequently asked questions
What is CVE-2026-16524?
Is CVE-2026-16524 actively exploited?
What is the CVSS score for CVE-2026-16524?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.