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Vulnerabilities/CVE-2026-64879Public Intelligence Dossier
Source: tenable · Limited verification•Last verified: •Collection Degraded
CVE-2026-64879Unknown / EvaluatingCRITICAL (raw)CVSS 9.9CWE-78

A filename supplied during file upload is not properly sanitized before being used in system command execution, allowing an attacker to inject shell metacharacters and achieve command injection via the audit file upload functionality.

Published: 22 Jul 2026•Last updated: 25 Oct 2026, 12:40 AM IST•Source identifier: vulnreport@tenable.com
Dossier completeness: source-provided sections 2 / 3 · rule guidance available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Unknown
KEV status was not determined.
CVSS score
9.9CRITICAL (raw)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Metric sourcevulnreport@tenable.com
EPSS probability
2.3%0.023
Percentile83rd
Weakness type
CWE-78
No further CWE recorded
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

A filename supplied during file upload is not properly sanitized before being used in system command execution, allowing an attacker to inject shell metacharacters and achieve command injection via the audit file upload functionality.

SOC priority

High Severity / Review

Actively exploited (source statement)

Unknown

Publicly disclosed

Unknown

Risk basis: SOC ecosystem technology relevance; CRITICAL severity; Critical source severity without confirmed exploitation

Affected Products & Remediation

1 source-backed product
Affected products and versions (source)
  • tenable security center · >= 6.6.0 <= 6.8.0 · NVD CPE · Source
NVD applicability prerequisites: cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*. These are conditions, not proof that an environment is exposed or unaffected.
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

Not provided by source

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Unknown
Exploited (source statement)
Unknown
Publicly disclosed (source)
Unknown

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

Matched command-injection (CWE-78)

Exposure

  1. Identify installations of the affected product and compare versions with the advisory.Telemetry: DeviceTvmSoftwareVulnerabilities · A weakness class does not establish local exposure. · Rule command-injection

Exploitation evidence

  1. Review command interpreters spawned by the affected service or application.Telemetry: DeviceProcessEvents · Unexpected process lineage can support command-injection hunting. · Rule command-injection

Response

  1. Confirm the vendor mitigation or fixed version on affected assets.Telemetry: DeviceTvmSoftwareVulnerabilities · Inventory checks can verify remediation. · Rule command-injection

CISA KEV Record

CISA KEV status was not determined for this record.

Change History & Source Data

— No recorded material change

CNA / source
vulnreport@tenable.com
Record status · verification
UPDATED · NVD API
CPE
cpe:2.3:a:tenable:security_center:*:*:*:*:*:*:*:*, cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

Evidence & Provenance

2 public sources
tenable.comSource recordnvd.nist.govSource record

Linked by the query's stored exact CVE association. Review required tables and validation status before use.

Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2026-64879
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2026-64879
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2026-64879"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc
Schema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
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Correlated briefings

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.