Skip to content
Fencer Vulns
medium 6.6

CVE-2026-35350 json

uutils coreutils cp Unexpected Privileged Executable Creation with -p

published 2026-04-22 6 mo ago modified 2026-10-26 13 d ago also GHSA-x2wv-9p67-mh9w , EUVD-2026-24982

cvss
6.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

The cp utility in uutils coreutils fails to properly handle setuid and setgid bits when ownership preservation fails. When copying with the -p (preserve) flag, the utility applies the source mode bits even if the chown operation is unsuccessful. This can result in a user-owned copy retaining original privileged bits, creating unexpected privileged executables that violate local security policies. This differs from GNU cp, which clears these bits when ownership cannot be preserved.

Patch / fix

  • rust-coreutils Debian 14 0.8.0-1

debian advisories DEBIAN-CVE-2026-35350

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-35350 updated cvss 6.6

rust-coreutils: cp: unexpected privileged executable creation with -p

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
6 mo ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/uutils/coreutils/issues/9750 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
GitHub 3.1 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

Affected packages

ecosystem package affected fixed in
crates.io coreutils
<=0.8.0
 no fix listed

Affected products

  • Uutils coreutils

Classification

Weakness
  • CWE-281 Improper Preservation of Permissions

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.