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VulnerabilityPublished Updated

CVE-2025-13225: Tanium TanOS · Exposed Files or Directories

Affects Tanium TanOSSource CVE Database V5

0

Not known to be exploited · CVSS 5.6 Medium.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
5.6Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Nov 2025

  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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Tanium TanOSAffected
  • =1.8.4
  • =1.8.5
Fixed in–

AI-suggested

European organizations should take the following specific actions: 1) Immediately verify the TanOS version in use and prioritize upgrading to a patched version once available from Tanium. 2) Restrict and monitor administrative access to TanOS systems to minimize the risk of privilege escalation and unauthorized file deletions. 3) Implement file integrity monitoring solutions to detect unauthorized file deletions or modifications on endpoints running TanOS. 4) Conduct regular audits of endpoint security configurations and access controls to ensure compliance with the principle of least privilege. 5) Develop and test incident response procedures specifically addressing scenarios involving file deletion or endpoint disruption. 6) Engage with Tanium support or trusted security vendors to obtain official patches or workarounds if patches are delayed. 7) Educate IT and security teams about the vulnerability’s characteristics to improve detection and response capabilities. 8) Consider network segmentation to limit lateral movement if an endpoint is compromised. These measures go beyond generic advice by focusing on access control, monitoring, and operational readiness tailored to TanOS environments.

Description

Tanium addressed an arbitrary file deletion vulnerability in TanOS.

References

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