CVE-2026-58100

highpriority · track · 0EPSS 0.001 · 1 %ileDEUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.10% (1st) EPSS
CVSS 7 · high
Is it mine?
4 products
Check your exposure
Who says so?
2 sources
cert_bund · nvd

EPSS · scored 2026-10-27

kqueue_fork_copy_knote() indexed into the child's file descriptor table using a knote's file descriptor number without a bounds check. Because the child's table is copied before knotes are transferred, a concurrent thread in the parent could grow the parent's table and register knotes with file descriptor numbers beyond the end of the child's table, causing an out-of-bounds read. An unprivileged local user may be able to exploit these races to escalate privileges.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.0
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.4–7

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 1 · impact 5.9
v3.16.4mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USCWE-362US
04

affected products (4)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-3664FreeBSD Project FreeBSD OS: Mehrere SchwachstellenDeutsch2026-09-29csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in FreeBSD Project FreeBSD OS ausnutzen, um seine Privilegien zu erhöhen, Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren oder Denial-of-Service-Zustände zu verursachen.

06

sources

Which sources assert this record, and when.

cert_bundnvdNVDCVE.orgMITRE
published 2026-10-15modified 2026-10-19
07

references (1) nvd

External citations — patches, advisories, analysis.

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