Cyber Resilience

CVE-2026-35360

Race Condition in Uutils Coreutils

Public PoCRace Condition
Published
22 April 2026
Modified
24 April 2026
Patch / advisory
View advisory
CVSS Score v3.1 6.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS Score 0.0010 1th percentile
Risk Priority 40 floored blend · peak EPSS

Summary

CVE-2026-35360 is a medium-severity Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367) vulnerability in Uutils Coreutils. Its CVSS base score is 6.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data Destruction (T1485); ranked at the 1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to AC-6 (Least Privilege) and SI-2 (Flaw Remediation) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

The touch utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file creation. When the utility identifies a missing path, it later attempts creation using File::create(), which internally uses O_TRUNC. An attacker can exploit…

more

this window to create a file or swap a symlink at the target path, causing touch to truncate an existing file and leading to permanent data loss.

CWE(s)
CWE-367

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1485 Data Destruction Impact
Adversaries may destroy data and files on specific systems or in large numbers on a network to interrupt availability to systems, services, and network resources.
attack.mitre.org →
Why these techniques?

TOCTOU race enables direct file truncation leading to data destruction.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-35352Same product: Uutils Coreutils
CVE-2026-35356Same product: Uutils Coreutils
CVE-2026-35362Same product: Uutils Coreutils
CVE-2026-35363Same product: Uutils Coreutils
CVE-2026-35349Same product: Uutils Coreutils
CVE-2026-35355Same product: Uutils Coreutils
CVE-2026-35353Same product: Uutils Coreutils
CVE-2026-35359Same product: Uutils Coreutils
CVE-2026-35365Same product: Uutils Coreutils
CVE-2026-35340Same product: Uutils Coreutils

Affected Assets

uutils
coreutils
all versions

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • SI-2 Flaw Remediation
  • AC-6 Least Privilege
Detect
Catch it (NIST detect / respond)
  • SI-4 System Monitoring
Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V15.4.2
  • V17.2.6

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Directly requires timely patching or replacement of the vulnerable touch utility to eliminate the TOCTOU window between path check and File::create().

AC-6 Least Privilege good match
prevent

Restricts the privileges under which touch executes, limiting the set of files an attacker-induced O_TRUNC can permanently destroy.

SI-4 System Monitoring partial match
detect

Enables monitoring of file truncation or unexpected symlink/target changes that would indicate exploitation of the race condition.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly include coding standards and reviews that prevent TOCTOU race conditions.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.17 Clock synchronization none match
none

Reliable, synchronized time across systems narrows the exploitable window in which a resource state can change between a security check and its use.

References