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VulnerabilityPublished

CVE-2026-35369: Uutils coreutils · Improper Input Validation

Affects Uutils coreutilsSource CVE Database V5

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Not known to be exploited · CVSS 5.5 Medium : upgrade to 0.6.0 when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.6.0
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade Uutils coreutils to 0.6.0.

Affected software

ProductAffectedFixed in
UutilscoreutilsAffected
  • <0.6.0
Fixed in
  • 0.6.0
GitHubuutils/coreutilspkg:github/uutils/coreutilsOther threatsAffected
  • =0
Fixed in–
GitHubcoreutilspkg:github/coreutilsOther threatsAffected
  • <0.6.0
Fixed in
  • 0.6.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, avoid using 'kill -1' with uutils coreutils to prevent unintended process termination.

Description

A vulnerability in the kill utility of uutils coreutils causes improper input validation. The utility misinterprets the argument 'kill -1' as a request to send the default signal (SIGTERM) to PID -1, which causes the kernel to terminate all processes visible to the caller. This behavior differs from GNU coreutils, which correctly treats '-1' as a signal number and reports a missing PID argument. This can lead to a system crash or massive process termination.

References

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