HOMEVULNERABILITIESCVE-2026-35342
LOW

CVE-2026-35342

CWE-377Published: April 22, 2026· Updated: Apr 22, 2026

3.3
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:2.6th

Official Description

The mktemp utility in uutils coreutils fails to properly handle an empty TMPDIR environment variable. Unlike GNU mktemp, which falls back to /tmp when TMPDIR is an empty string, the uutils implementation treats the empty string as a valid path. This causes temporary files to be created in the current working directory (CWD) instead of the intended secure temporary directory. If the CWD is more permissive or accessible to other users than /tmp, it may lead to unintended information disclosure or unauthorized access to temporary data.

NVD Source

Technical Analysis

CVE-2026-35342 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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All References (2)

→
https://github.com/uutils/coreutils/pull/10566
→
https://github.com/uutils/coreutils/releases/tag/0.6.0

Quick Facts

CVE IDCVE-2026-35342
CVSS Score3.3 / 10
SeverityLOW
WeaknessCWE-377
CISA KEVNo
EPSS (30d)0.01%
PublishedApr 22, 2026

Related CVEs (CWE-377)

CVE-2025-67223
7.5
CVE-2026-49134
7.1
CVE-2026-20204
7.1
CVE-2026-40973
7.0
CVE-2026-25701
7.0
CVE-2026-4822
7.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-35342 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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