CVE-2026-58084: FreeBSD · Use of Uninitialized Resource
Affects FreeBSDSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 27 Oct 2026, 14:15 UTC
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 19 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| FreeBSD FreeBSD | Affected
| Fixed in– |
AI-suggested
Until a fix is available, restrict unprivileged users from creating CLOCK_TAI timers if possible.
Description
CVE-2026-58084 is a vulnerability in FreeBSD 15.0-RELEASE and 15.1-RELEASE where the kernel fails to check for errors when retrieving the previous timer value for CLOCK_TAI timers. This leads to copying uninitialized kernel stack memory to userspace, allowing an unprivileged local user to potentially disclose sensitive kernel data.