The vulnerability of the zfs_ioc_userspace_many() function in the OpenZFS component of FreeBSD-based operating systems allows a attacker to increase their privileges.
🗓️ 12 Aug 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 2 Views
| Reporter | Title | Published | Views | Family All 9 |
|---|---|---|---|---|
 | FreeBSD -- Multiple vulnerabilities in OpenZFS | 30 Jun 202600:00 | – | freebsd |
 | CVE-2026-49429 | 6 Jul 202601:35 | – | circl |
 | CVE-2026-49429 | 30 Jun 202600:00 | – | cve |
 | FreeBSD-SA-26:40.zfs | 30 Jun 202600:00 | – | freebsd_advisory |
 | FreeBSD : FreeBSD -- Multiple vulnerabilities in OpenZFS (9534b664-74e1-11f1-958d-bc241121aa0a) | 1 Jul 202600:00 | – | nessus |
 | FreeBSD Security Advisory - FreeBSD-SA-26:40.zfs | 30 Jun 202600:00 | – | packetstormnews |
 | PT-2026-55921 | 6 Jul 202600:00 | – | ptsecurity |
| PT-2026-55922 | 6 Jul 202600:00 | – | ptsecurity |
| PT-2026-55923 | 6 Jul 202600:00 | – | ptsecurity |
| Source | Link |
|---|---|
| freebsd | www.freebsd.org/security/advisories/FreeBSD-SA-26:40.zfs.asc |
| opennet | www.opennet.ru/opennews/art.shtml |
| cybersecurity-help | www.cybersecurity-help.cz/vdb/vulns/136008/ |
| web | www.web.nvd.nist.gov/view/vuln/detail |
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12 Aug 2026 00:00Current
5.6Medium risk
Vulners AI Score5.6
CVSS 26.8
CVSS 37.8