CVE-2026-58086

highpriority · track · 0EPSS 0.004 · 32 %ileDEUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.38% (32nd) EPSS

CVSS 8.1 · high

Is it mine?

12 products

Check your exposure

Who says so?

2 sources

cert_bund · nvd

EPSS · scored 2026-10-27

As an inadvertent side effect of an unrelated code change, PRIV_KTRACE was always denied to a jailed root user. Tracing configured by a jailed root user was therefore not flagged as privileged. An unprivileged user in a jail that has permission to debug the target process can modify the jailed root user's ktrace(2) flags, or disable tracing outright. A jailed root user therefore cannot reliably trace unprivileged processes.

cvss

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

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Hsecondaryexploitability 2.8 · impact 5.2

v3.17.4highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

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

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-273US

affected products (12)

Products and version ranges known to be affected.

FreeBSD Project FreeBSD OS <14.4-RELEASE-p8all versionscert_bundDE
FreeBSD Project FreeBSD OS <14.4-STABLEall versionscert_bundDE
FreeBSD Project FreeBSD OS <15.0-RELEASE-p12all versionscert_bundDE
FreeBSD Project FreeBSD OS <15.1-RELEASE-p2all versionscert_bundDE
FreeBSD Project FreeBSD OS <15.1-STABLEall versionscert_bundDE
FreeBSD Project FreeBSD OS< 14.4-RELEASE-p8cert_bundDE
FreeBSD Project FreeBSD OS< 14.4-STABLEcert_bundDE
FreeBSD Project FreeBSD OS< 15.0-RELEASE-p12cert_bundDE
FreeBSD Project FreeBSD OS< 15.1-RELEASE-p2cert_bundDE
FreeBSD Project FreeBSD OS< 15.1-STABLEcert_bundDE
freebsd freebsd= 15.0nvdUScpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
freebsd freebsd= 15.1nvdUScpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2590FreeBSD Project FreeBSD OS: Mehrere SchwachstellenDeutsch2026-07-29csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in FreeBSD Project FreeBSD OS ausnutzen, um seine Privilegien zu erhöhen, Daten zu manipulieren oder vertrauliche Informationen offenzulegen.

sources

Which sources assert this record, and when.

cert_bund nvd NVD CVE.org MITRE

published 2026-08-19modified 2026-10-27

references (1) nvd

External citations — patches, advisories, analysis.

https://security.freebsd.org/advisories/FreeBSD-SA-26:53.ktrace.ascVendor Advisory

scry

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