CVE-2026-12139

SMB credential disclosure via visible process invocation

Published Jul 21, 2026 · Updated Jul 21, 2026

Information disclosure in affected Tanium Connect releases allows local users to obtain credentials for configured SMB destinations. The SMB destination invokes a process with its credential in a form visible to other local processes, exposing sensitive authentication data. Exploitation requires high privileges and access to the system running the Tanium Module Server; integrity and availability are unaffected.

CVSS severity4.4
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in affected Tanium Connect releases allows local users to obtain credentials for configured SMB destinations. The SMB destination invokes a process with its credential in a form visible to other local processes, exposing sensitive authentication data. Exploitation requires high privileges and access to the system running the Tanium Module Server; integrity and availability are unaffected.

The record

CVE
CVE-2026-12139
Published
Jul 21, 2026
Updated
Jul 21, 2026
Vendor
Tanium
Product
Tanium Connect
Classifications
CWE-214, T1057
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.29.251 <5.29.251
  2. Affected versionversion=5.37.156 <5.37.156
  3. Affected versionversion=5.47.112 <5.47.112

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Tanium · Tanium Connectversion=5.29.251 <5.29.251; version=5.37.156 <5.37.156; version=5.47.112 <5.47.112

Published CVSS scores

4.4TaniumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-214Invocation of Process Using Visible Sensitive Information
T1057Process Discovery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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