VulnerabilityPublished 9 Feb 2026

CVE-2025-15314: Tanium end-user-cx · Link Following

Affects Tanium end-user-cxSource CVE Database V5

Not known to be exploited · CVSS 5.5 Medium · fixed in 1.8.21 : update Tanium end-user-cx when convenient.

Data as of 26 Oct 2026, 11:07 UTC

CVSS 3.1 base score

5.5Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 1.8.21, 1.6.926, 1.4.1175

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

Attack Vector: Local
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 9 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Tanium end-user-cx to 1.8.21, 1.6.926 or 1.4.1175.

Affected software

Product	Affected	Fixed in
Taniumend-user-cx	Affected >=1.8.0 <1.8.21	Fixed in 1.8.21
Taniumend-user-cx	Affected >=1.6.0 <1.6.926	Fixed in 1.6.926
Taniumend-user-cx	Affected >=1.4.0 <1.4.1175	Fixed in 1.4.1175

CPE configurations (3)

cpe:2.3:a:tanium:endpoint_end-user-cx:1.4.1174:*:*:*:*:*:*:*
cpe:2.3:a:tanium:endpoint_end-user-cx:1.6.925:*:*:*:*:*:*:*
cpe:2.3:a:tanium:endpoint_end-user-cx:1.8.20:*:*:*:*:*:*:*

AI-suggested

To mitigate CVE-2025-15314, European organizations should: 1) Immediately identify all instances of Tanium end-user-cx running affected versions (1.4.0, 1.6.0, 1.8.0) through asset management and software inventory tools. 3) Restrict local access to systems running end-user-cx to trusted personnel only, minimizing the risk of exploitation by low-privilege users. 4) Implement strict endpoint security controls, including application whitelisting and privilege management, to prevent unauthorized local code execution or escalation. 5) Monitor system logs and file integrity monitoring tools for unusual file deletions or suspicious link manipulations. 6) Educate IT and security teams about the vulnerability specifics to ensure rapid detection and response. 7) Consider network segmentation and enhanced access controls around critical endpoints to reduce the attack surface. These steps go beyond generic advice by focusing on controlling local access and monitoring file system integrity specific to the nature of this vulnerability.

Description

CVE-2025-15314 is a medium severity vulnerability in Tanium's end-user-cx product that allows an authenticated local attacker to cause arbitrary file deletion due to improper link resolution before file access. The flaw arises from 'link following' issues where symbolic or hard links are not properly handled, enabling an attacker with low privileges to delete files they should not be able to. Exploitation does not require user interaction but does require local privileges. The vulnerability impacts versions 1.4.0, 1.6.0, and 1.8.0 of end-user-cx.

Impact

For European organizations, the primary impact of CVE-2025-15314 lies in the potential for unauthorized deletion of files by an attacker with local access and low privileges. This can lead to disruption of endpoint management operations, loss of critical configuration files, or tampering with system integrity. In sectors such as finance, healthcare, energy, and government, where Tanium's endpoint management solutions are often used, such integrity compromises could result in operational downtime, compliance violations, and increased risk of further exploitation. Although the vulnerability does not directly impact confidentiality or availability, the ability to delete arbitrary files can indirectly cause service interruptions or data loss. The requirement for local privileges limits remote exploitation but does not eliminate risk, especially in environments where endpoint security is lax or insider threats exist. European organizations with large distributed endpoint fleets using affected versions should consider this vulnerability a moderate risk that warrants timely remediation to maintain operational security and compliance with data protection regulations.

References

security.tanium.com/TAN-2025-010 (opens in a new tab)

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