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CVE-2025-10279VulnerabilityPublished

CVE-2025-10279: mlflow/mlflow · Creation of Temporary File in Directory with Insecure Permissions

Affects mlflow/mlflowSource CVE Database V5

0

Not known to be exploited · CVSS 7.0 High : upgrade to 3.4.0 soon.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.0 base score
7.0High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 15% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.4.0
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 2026-10-25.

What to do

Upgrade mlflow to 3.4.0.

Affected software

ProductAffectedFixed in
mlflowmlflow/mlflowAffected
  • ≥ unspecified, < 3.4.0
Fixed in–
PyPImlflowpkg:pypi/mlflowOther threatsAffected
  • >=2.20.3 <3.4.0
Fixed in
  • 3.4.0

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

AI-suggested

1. Upgrade mlflow to version 3.4.0 or later, where the vulnerability is fixed. 2. Restrict permissions on temporary directories used by mlflow to prevent world-writable access; ensure directories are created with least privilege (e.g., 0o700). 3. Implement strict access controls on shared systems to limit write access to /tmp or equivalent temporary storage locations. 4. Monitor file system changes in temporary directories for suspicious activity indicative of race condition exploitation. 5. Use containerization or sandboxing to isolate mlflow environments, reducing the impact of potential code execution. 6. Conduct regular security audits and penetration tests focusing on local privilege escalation and file permission misconfigurations. 7. Educate users and administrators about the risks of insecure temporary file handling and the importance of patching vulnerable software promptly.

Description

In mlflow version 2.20.3, the temporary directory used for creating Python virtual environments is assigned insecure world-writable permissions (0o777). This vulnerability allows an attacker with write access to the `/tmp` directory to exploit a race condition and overwrite `.py` files in the virtual environment, leading to arbitrary code execution. The issue is resolved in version 3.4.0.

References

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