CVE-2026-58089: hwpmc fails to detach PMCs during exec credential transitions
Vendor fix available · Affected: FreeBSD · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 3% of scored CVEs
DescriptionCVE.org
When a process calls execve(2) to execute a setuid or setgid image, hwpmc(4) is supposed to detach PMCs owned by unprivileged processes. An inverted check meant that this scenario was not handled properly. An unprivileged local user who has attached PMCs to a process can continue monitoring it after the process executes a setuid or setgid binary, contrary to the intended policy.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- FreeBSD · FreeBSDfrom 15.1-RELEASE before p3; from 15.0-RELEASE before p13; from 14.4-RELEASE before p9
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- FreeBSD
- Published
- August 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-58089 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.