7.1

CVE-2026-101304: freebsd Improper Check for Dropped Privileges

CVSS: 7.1v3.1HighAnalyzed
Published 15-10-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-101304 is a high (CVSS 7.1) Improper Check for Dropped Privileges vulnerability in freebsd. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.1% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (NVD)
EPSS score
0.18%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-10-2026
    PublishedVulnerability first disclosed.

Description

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.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

15-10-202619-10-2026
EPSS score
0.18%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Freebsd1 product
  • freebsdEOL≥ 15.1-RELEASE, < p4 | ≥ 15.0-RELEASE, < p14 | ≥ 14.5-RELEASE, < p1 | ≥ 14.4-RELEASE, < p10 | 14.4 | 14.4:p1 | 14.4:p2 | 14.4:p3 | 14.4:p4 | 14.4:p5 | 14.4:p6 | 14.4:p7 | 14.4:p8 | 14.4:p9 | 14.5 | 15.0 | 15.0:p1 | 15.0:p10 | 15.0:p11 | 15.0:p12 | 15.0:p13 | 15.0:p2 | 15.0:p3 | 15.0:p4 | 15.0:p5 | 15.0:p6 | 15.0:p7 | 15.0:p8 | 15.0:p9 | 15.1 | 15.1:p1 | 15.1:p2 | 15.1:p3

1 vendor · 1 product

References

1 links