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Freebsd CVE-2026-101304

| EUVDEUVD-2026-101865
Improper Check for Dropped Privileges (CWE-273)
2026-10-15 freebsd
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Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V8 - Authorization Privilege drop verification
Monitor Track and reassess. Why: No CVSS yet + weak signal (CWE or non-zero EPSS).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisCVE.org

When fdescfs(4) was mounted in a jail with the "nodup" option, opening /dev/fd/N returned a descriptor that did not inherit FD_RESOLVE_BENEATH or the Capsicum capability rights of descriptor N.

A process in a jail that has received a directory file descriptor from another jail can use these techniques to escape the jail's filesystem root restriction.

Affected VersionsENISA

FreeBSD 14.4-RELEASE <p10
FreeBSD 14.5-RELEASE <p1
FreeBSD 15.0-RELEASE <p14
FreeBSD 15.1-RELEASE <p4

Affects your stack

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  • Exploit and PoC references, threat intelligence from 22 sources

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Threat Intelligence Overview

EPSS Score
0.2%
Top 93% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity Not scored yet
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
No CVSS yet + weak signal (CWE or non-zero EPSS)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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