Cyber Resilience

CVE-2026-2605

Info Disclosure in Tanium Tanos 1.8.4 – 1.8.4.0249

Published
20 February 2026
Modified
20 February 2026
Patch / advisory
CVSS Score v3.1 5.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0026 18th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-2605 is a medium-severity Insertion of Sensitive Information into Log File (CWE-532) vulnerability in Tanium Tanos. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Credentials In Files (T1552.001); ranked at the 18th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AU-3 (Content of Audit Records) and AC-6 (Least Privilege) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Tanium addressed an insertion of sensitive information into log file vulnerability in TanOS.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1552.001 Credentials In Files Credential Access
Adversaries may search local file systems and remote file shares for files containing insecurely stored credentials.
Why these techniques?

CWE-532 enables exposure of sensitive data (commonly credentials) via log files on the local system, directly facilitating T1552.001.

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

CVEs Like This One

CVE-2025-13225Same product: Tanium Tanos
CVE-2025-15323Same product: Tanium Tanos
CVE-2025-15311Same product: Tanium Tanos
CVE-2025-15312Same product: Tanium Tanos
CVE-2026-2350Same vendor: Tanium
CVE-2025-15321Same product: Tanium Tanos
CVE-2026-1292Same vendor: Tanium
CVE-2026-1344Same vendor: Tanium
CVE-2025-15332Same vendor: Tanium
CVE-2026-49200Shared CWE-532

Affected Assets

tanium
tanos
1.8.4 — 1.8.4.0249 · 1.8.5 — 1.8.5.0282 · 1.8.6\* — 1.8.6.0150

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • AU-3 Content of Audit Records
  • SC-28 Protection of Information at Rest
  • AC-6 Least Privilege
Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)

Validate
Prove the fix (OWASP ASVS)

Mitigating Controls (NIST 800-53 r5) AI

prevent

Directly governs audit-record content so that sensitive data is excluded from TanOS log files.

prevent

Requires cryptographic or access protections for information at rest, limiting exposure if sensitive data is nevertheless written to logs.

prevent

Enforces least-privilege access to log files, reducing the impact of any sensitive information that TanOS inadvertently records.

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 prohibit writing sensitive data to logs; eliminating the weakness satisfies only one narrow slice of the control.

PR.PS-04 partial match
prevents

Log generation configuration can and should exclude sensitive data, but the control statement focuses on availability rather than content filtering.

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.8.15 Logging mostly match
prevents

Requiring de-identification and privacy controls before logs leave the organization reduces the chance that sensitive data inadvertently captured in logs becomes exposed to external parties.

mitigates

By defining what records must be kept, where, and for how long, the control discourages the inadvertent inclusion of sensitive information in logs or other externally accessible files that fall outside the formal record system.

mitigates

Mandating deletion of temporary files and logs that may contain sensitive information prevents those artifacts from remaining accessible after the data is no longer needed.

A.8.11 Data masking partial match
mitigates

When log entries are produced from masked data sets, the control prevents the inadvertent insertion of sensitive values into externally accessible log files.

mitigates

DLP inspection of logs and file transfers can detect and block the inadvertent placement of sensitive tokens or credentials into externally accessible log files before they are written or transmitted.

prevents

Requiring restrictions on free-text fields and proper error-message handling stops developers from embedding or leaking sensitive data into logs or diagnostic output.

References