CVE-2026-15053Network attack vector

Unauthenticated service interruption via excessive memory allocation

Published Jul 8, 2026 · Updated Jul 8, 2026

Denial of service in Tanium Server allows remote attackers to interrupt the server over the network without authentication. The published CWE mapping identifies excessive memory allocation from an attacker-controlled size value, but Tanium has not disclosed the affected component or input path. No user interaction is required; successful exploitation causes an availability-only service interruption, with no reported data exposure or modification.

CVSS severity7.5
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Tanium Server allows remote attackers to interrupt the server over the network without authentication. The published CWE mapping identifies excessive memory allocation from an attacker-controlled size value, but Tanium has not disclosed the affected component or input path. No user interaction is required; successful exploitation causes an availability-only service interruption, with no reported data exposure or modification.

The record

CVE
CVE-2026-15053
Published
Jul 8, 2026
Updated
Jul 8, 2026
Vendor
Tanium
Product
Tanium Server
Classifications
CWE-789, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 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=7.7.3.8298 <7.7.3.8298
  2. Affected versionversion=7.8.2.1198 <7.8.2.1198
  3. Affected versionversion=7.8.4.1327 <7.8.4.1327

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tanium · Tanium Serverversion=7.7.3.8298 <7.7.3.8298; version=7.8.2.1198 <7.8.2.1198; version=7.8.4.1327 <7.8.4.1327

Published CVSS scores

7.5TaniumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-789Memory Allocation with Excessive Size Value
T1499.004Application or System Exploitation

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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